P - piezoelectricity 中文

piezoelectricity n.【物理學】壓電(學)；壓電(現象)。

This master dissertation derived from one of “ the fifth strategic “ items of chongqing . “ the technology of initiatively monitoring the health and safety of infrastructure based on piezoelectricity “ . it is a kind of monitor technology that has some characteristics , such as real time , online , undamaged and distribution 本碩士學位論文來源于重慶市“十五”攻關項目《壓電式基礎設施健康安全主動監測技術》，這是一種具有實時、在線、無損、分布式特性的監測技術，其目的在于為基礎設施工程結構監測提供一種嶄新的，而又切實可行、可靠的工程方法和儀器系統。
The vibration of the flexible panel is monitored by a piezoelectricity accelerate sensor , and through the comparision of the sensor “ s power spectrums signals of before controlling and after controlling , we can decide the controlling effect of the flexible panel 柔性墻的振動是通過一個壓電加速度傳感器測量的。通過控制前后傳感器輸出信號的功率譜的比較來決定柔性墻的振動的控制情況。
In the past , piezoelectricity transducer was adopted usually in the ultrasonic flowmeter development , so in higher temperature , for example , exceeds 150 “ c , the measurement was not carried out 以往的超聲流量計均采用壓電超聲換能器進行測量，這樣在被測流體溫度較高，超過150的情況下，就無法進行測量了。
piezometer
Accelerometer is used widely for measuring acceleration in civil and military field . at present , there are several type of accelerometers such as piezoelectricity electric charge accelerometer , ic piezoelectricity electric accelerometer , compressive resistance accelerometer and alteration capacitance accelerometer . the main part in alteration capacitance accelerometer is capacitance measurement circuit . foreign countries have produced accelerometer that have tiny volume and high performance . however , our country is not able to produce such accelerometer due to the lack of technique 加速度計作為一種測量加速度的儀器,在民用、軍用領域都有廣泛的應用。目前市場上的加速度計主要有壓電式電荷加速度計、集成電路式壓電加速度計、壓阻式加速度計、變電容式加速度計等幾種類型的加速度計。變電容式加速度計的設計中一個重要的環節就是電容檢測電路的設計。
His thesis presents many test results of : the superficial roughness of standard slice , aluminum slice , and glass slice by using the outline detector ; the frequency characteristic of experimenting device ; the characteristic of pivotal instruments ; the displacement characteristic of layer - piezoelectricity actuator ; tiny displacement detection . the experimental data are believable and the theoretic analysis is correct 本論文還給出了用輪廓儀測試多種標準片、鋁片、玻璃片的表面粗糙度的測試結果、實驗裝置的頻率特性實驗結果、關鍵器件的特性實驗結果、積層式壓電致動器的位移特性試驗結果及微位移測量試驗結果。
And it also found that the relative densities of the samples annealed under loompa were 10 percent above those of the samples annealed without pressure . based on this fabrication process , the pan was introduced to enhance the uniformity of the composite , thus the piezoelectricity was greatly improved and the poling voltage can be lowered 在此基礎上，發現在pvdf pzt體系中引入少量導電聚合物pan并使其均勻分布于材料內部時提高了陶瓷相的極化率和壓電復合材料的壓電性能，并且根據介電常數介電損耗及與溫度關系的分析可知，添加少量pan的pzt pvdf壓電復合材料具有更寬的溫度使用范圍，溫度依賴性小。
This kind piezocomposite not only possesses properties of the piezoelectric ceramic and the polymer , but also overcomes the disadvantage of each single material . it contains many fine properties such as the high piezoelectricity , low brittleness , density and dielectric constant . and it also can be easy made into various shape products and thin slice 由于這種復合材料兼有組成復合材料各組分的性能，克服了陶瓷和聚合物兩者的不足，具有強壓電性、脆性低、密度和介電系數低、易制得大面積薄片以及復雜形狀制品，制造工藝簡單等優點。
The disperse degree of the ceramic can greatly affect uniformity of the composite , which limit the poling voltage and affect the piezoelectricity . in this paper , the relationships among constitutes , microstructures , dielectric and piezoelectric properties were calculated by employing the banno unit cell mode ; pzt ceramic were synthesized by the hydrothermal method and the appropriate solution was selected according the adsorption of pvdf on the ceramic particle surface ; then , relationships between the disperse degree and the fabrication process were studied . base on these , the pzt / pvdf composites intermingled some pan were prepared and the microstructures were investigated 論文首先利用bannounitcell模型，計算了pzt pvdf壓電復合材料的組成、結構、與其壓電和介電等性能之間的關系；針對壓電復合材料存在的均勻分散性差的缺點，選用水熱法制備的粒度均勻的pzt陶瓷粉末，并采用溶液混和法與聚合物pvdf進行分散復合，重點研究了不同工藝條件下陶瓷的均勻分散性及其與材料微觀結構之間的關系。
As a new kind of piezoelectricity macromolecule material , pvdf ( polyvinylidene fluoride ) has not only lower density , but also better piezoelectricity , good mechanical performance and plasticity . when a particular shaped pvdf film is used as an error sensor and is bonded to the surface of the measured structure , there will be little effect on the system 由于pvdf ( polyvinylidenefluoride聚偏氟乙烯)是一種新型的壓電高分子材料，它不僅密度低，而且具有較強的壓電性，機械性、可塑性好等特點。用特定形狀的pvdf薄膜作為誤差傳感器，將它貼在結構體表面上時，對系統產生很小的影響。
Finally , the paper also describes method and result of experiment based on above mention . the result of experiment prove that there is a excellent linear relationship between three - axis force applying to sensor head and the change of four quartz crystal plates , which indicate that the three - axis force tactile sensing technology applying piezoelectricity of quartz crystal is scientific and feasible 本課題制作了這種傳感器，并設計了三軸力的加載裝置對傳感器進行了實驗，結果顯示力的三個分量與四片壓電石英晶體之間有良好的線性關系，驗證了壓電三軸力觸覺傳感器技術是科學的、可行的。
The ultrasonic motor is a kind of direct driver which is uses the converse piezoelectric effect of the piezoelectricity ceramics , by using transformation and the coupling of each kind of expansion and contraction vibration pattern enlarging the material microscopic distortion by resonate effect and transforming it to macroscopic movement of the rotor or the slide by the friction coupling 超聲波馬達是一種利用壓電陶瓷的逆壓電效應,通過各種伸縮振動模式的轉換與耦合,將材料的微觀變形通過共振放大和摩擦耦合轉換成轉子或者滑塊宏觀運動的直接驅動器。
In chapter 2 , the structure character and application fields of various driving mechanisms microactuators such as electrostatic , electromagnetic , piezoelectricity and thermal are reviewed . from the point of view of effect and application their advantage and disadvantage are compared . in this chapter , according as the needs of applications , further more research about the character and application of various magnetic microactuators has been done 第二章、分析了靜電、電磁、壓電和熱等不同驅動原理的微致動器的結構特點和應用場合，從致動效果和應用等角度比較了它們的優缺點；根據磁微致動器的應用需要，本文又進一步對不同磁微致動器的結構特點和應用進行了分析。
This master dissertation derived from one of “ the fifth strategic “ items of chongqing . “ the technology of initiatively monitoring the health and safety of infrastructure based on piezoelectricity “ . it is a kind of monitor technology that has some characteristics , such as real time , online , undamaged and distribution 本碩士學位論文來源于重慶市“十五”攻關項目《壓電式基礎設施健康安全主動監測技術》，這是一種具有實時、在線、無損、分布式特性的監測技術，其目的在于為基礎設施工程結構監測提供一種嶄新的，而又切實可行、可靠的工程方法和儀器系統。
Polyhydroxyalkanoates ( pha ) , a family of intracellular polyester synthesized by many bacteria , have received increasing attention due to its excellent biodegradability , biocompatibility , optical activity and piezoelectricity , as well as potential applications in areas of biodegradable packaging , tissue engineering and drug delivery 聚羥基脂肪酸酯( polyhydroxyalkanoate ， pha ) ，一種由微生物合成的聚酯，由于具有生物可降解性、生物相容性、光學性、壓電性、氣體相隔性等許多優良性能，而有可能在眾多領域，如生物降解性包裝材料、組織工程材料和緩釋材料等方面得到廣泛應用，因此正日益引起了科研領域及工業界的廣泛興趣。
Because of the crystalline leading to the piezoelectricity of pvdf , pvdf fiber and pvdf / pa11 fiber ' s structures and crystalline were investigated and analyzed by means of wide angle x - ray diffraction , differential scanning calorimetry , fourier transmittance infra - red spectroscopy and scanning electron microscopy , etc . it was shown that there are two kinds of crystalline - a phase and b phase in pvdf fiber 由于pvdf的壓電性與晶體結構有關，于是利用紅外光譜、差熱分析、廣角x光衍射和掃描電鏡等測試手段對純pvdf纖維以及pvdf pa11共混纖維的結構性能及晶型轉變進行了深入的研究。
Based on the recent reserch at home and abroad , the frc application in civil engineering were discussed . it included : the smart cfrc based on piezoelectricity , the temperature deformation control of synthetic frc structure , and the basic mechanical properties of frc . however , few reports concentrated on energy dissipation of flexible frc structure 這些研究涉及到各個方面，包括碳纖維混凝土壓電等機敏性的研究、合成纖維混凝土結構溫度變形控制的研究以及纖維混凝土基本力學性能和大型工程應用的研究等，而關于柔性纖維混凝土結構的能量耗散方面的研究較少。
There are many kinds of tactile sensors based on resistance , piezoelectricity effect , pyroelectricity effect , capacitance , magnetic conduction ， etc . this paper reviews the current development of tactile sensing technology at home and abroad , and points out their advantages and disadvantages 本文介紹了國內外觸覺傳感器技術發展的現狀，并介紹了一些典型觸覺傳感器的設計方法，分析了它們各自所具有的優點和所存在的缺點。
The noise produced by the outside speaker radiates into the enclosure through the vibration of the flexible panel . and via the piezoceramic ( pzt - 5h ) actuator and piezoelectricity diaphragm ( pvdf ) sensor located on the flexible panel to realize the active control 由外部揚聲器產生的噪聲通過柔性墻的振動進入閉合空間內部，并通過粘合在柔性墻上的壓電陶瓷( pzt )致動器和壓電薄膜( pvdf )傳感器來實現主動控制。
After analyzing the sense principles and calculation expression for piezoelectricity , we compose a sense network , compare the difference between the voltage amplifier and charge amplifier , give out the electric circuit of piezoelectric sensor for measure system 在分析了壓電片對動態應變的傳感原理和計算表達式后，該系統采用壓電傳感器組建了一個傳感器網絡。并且對比了電壓放大器和電荷放大器的差異。

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piezoelectricity

piezoelectricity n.【物理學】壓電(學)；壓電(現象)。

piezometer