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emission n.1.(光、熱、氣體等的)發出,發射,射出,放射;傳播...

emission spectrum

In 1961, auto manufacturers began installing crankcase emission control system on cars built for registration in california . 早在1961年,汽車制造廠商便開始在汽車制造時安裝曲軸箱有害污染控制系統,并在美國加利福尼亞州注冊。

The stationary sources of emission include fuel consumption in power plants; industrial, commercial, and domestic heating; and solvent emissions . 散發的固定來源包括動力廠燃料的燃燒;工業,商業和家庭加熱;以及溶劑散發物。

Whatever the wavelength of the radiation we study, we are still looking principally for those telltale emission and absorption . 不論我們研究的輻射具有什么樣的波長,我們始終以那些泄露天機的發射線與吸收線為主要尋找對象。

The justification of(13. 2-2)as a representation of spontaneous emission noise is provided by the discussion preceding(13. 1-7) . 根據上面對式(131-7)的討論,就可以將公式(132-2)看作是自發輻射噪聲的表達式。

It is assumed that the emission and absorption of light energy by an atom or molecule is not a continuous process but occurs in steps . 假定原子或分子發射光能和吸收光只能不是一個連續的過程,而是階梯式發生的。

All automobile engines now built are equipped with the positive-crankcase ventilation system of crankcase emission control . 所有現代制造的汽車發動機,都需要裝備控制曲軸箱有害污染的曲軸箱強制通風系統。

The availability of new passenger cars each year depends on whether car makers successfully complete an emission certification process . 每年新車是否可用,取決于汽車制造者是否成功地完成排放物鑒定程序。

The emission observed while holding at the proof load provides another piece of information regarding the imminence of failure . 在驗證載荷施加期間,檢測聲發射還能額外地提供有關破壞臨近程度的信息。

This work was followed by worldwide research aimed at improving understanding of the theory of stimulated emission in semiconductors . 各國相繼進行廣泛研究,以進一步探討半導體中的受激發射理論。

This chapter describes methods of estimating airborne pollutant concentration distributions associated with various emission sources . 本章論述幾種有關各種排放源的大氣污染物濃度分布的估算方法。

Equally objectionable is the fact that saturation by spontaneous emission reduces the gain exercised by an incoming signal . 同樣不利的事實是,自發輻射引起的飽和減少了入射信號所能獲得的增益。

Because of the continuous decay, the quantity of radioactive material and the rate of emission of radiation decrease steadily . 由于連續衰變的結果,放射性物質的數量,輻射發射率都逐漸下降。

Both uranium and plutonium are radioactive, and their activity consists in the emission of what are called “alpha particles“ . 鈾和钚二者都具有放射性,它們的放射性包括放射所謂粒子。

Another early approach to controlling exhaust emissions was the engine modification, or controlled-combustion system . 另一種早期的控制排氣污染的途徑是發動機調整或控制燃燒系統。

In the spark-ignition engine, recirculating some of the exhaust gas reduces the emission of nitrogen oxides . 在火花點火的發動機中,再循環的一部分廢氣減少了氧化氮的有害污染。

The attraction of atomic emission techniques is that they provide a means for simultaneous multi-element analysis . 原子發射技術的長處在于它是一種能同時進行多元素分析的方法。

Evaluation of emissions and control equipment is for the development of new pollutant source performance standards . 對排放量和控制設備進行評價為的是制定新污染源的執行標準。

In 1970, american motors was granted special permission to purchase emission control technology from gm . 1970年,美國汽車公司獲得許可從通用汽車公司那里購買控制排氣的技術。

Uranium analysis by the emission of delayed neutrons, following fission of u235, has been described by amiel . 阿密爾論述了應用U235裂變后產生的緩發中子流分析鈾的方法。