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pulverous adj.粉的;粉狀的;滿是粉末的。

pulverulent

Based on the theory of unsaturated soil mechanics and the properties of compacted expansive soil , this paper takes the northern part k12 + 840 - k12 + 920 of nanning urban highway as an example to studies some aspects of lime improvement of expansive soil and the technology of construction . the chief content of this paper is : the lime improvement mechanism of expansive soil ; confirm the technical parameters of lime mixed from the results of test in laboratory ; the scale - down test to define the maximum effective grain size of expansive soil when it is improved by lime ; by building bank slope model and making use of finite element seepage flow program of saturated - unsaturated to calculate the examples , this paper simulates the humidity site in order to checkout the effect of lime improvement ; studies and proves that it is feasible to mix blocky expansive soil and pulverous lime , and to fill roadbed by common construction machines etc . 本文研究的工作就下述幾個方面展開:用石灰改良膨脹土的機理;通過室內試驗確定摻灰的技術指標;在室內進行膨脹土摻灰的最大有效粒徑的模擬試驗,即鈣離子水試驗,由此總結出“粉?塊”灰?土攪拌工藝的有效性、合理性和可行性;用數值方法對路堤使用期的濕度場進行模擬,并與路堤的強度?變形的計算域耦合,以檢驗土性改良的效果,從而探索一種描述改良膨脹土路堤運行工況的數值方法;用現有最常用的且費用最低的施工機具,對灰?土進行“粉?塊”攪拌摻和及路基的填筑施工等。

Experimental studies were conducted at the yucheng comprehensive experimental station of the chinese academy of sciences during the period from march to june in 2003 . respiration of a pulverous sandstone soil was studied under cultivation of winter wheat over a growth season . soil ch4 was measured by the static - chamber method combined with gas chromatography ( gc ) technique . the results indicated that the soil of winter wheat field in rapid growth season is a weak sink of ch4 本文利用靜態箱氣相色譜( gc )分析的方法,在中國科學院禹城綜合試驗站,對華北平原冬小麥生長旺季期間麥田土壤中ch _ 4氣體通量進行了測定,試驗起止時間為2003年3 6月,得出華北平原典型冬麥田土壤是大氣ch _ 4的弱吸收匯。

Ammonium chloride ( nh4cl ) , molecular weight 53 . 49 , corlorless cubic crystal or pulverous , taste briguet . it will sublimat or decompourd when heated and clot in dump weather . it is soluble and can black metal and other metal . it is mainly used in battery , storage battery , ammomium salt , tan , galvan oplasty , medicine , photo , electrode , adhesive and so on 49為無色立方結晶或粉末狀,味咸涼,加熱升華或分解,在潮濕陰雨天氣,吸潮結塊,易溶于水,對黑色金屬和其它金屬有腐蝕。

This product is used for that in order to reach even and effective desulfidation for rubber powder , put pulverous crosslinked rubber , softener , activator and water into the pot , heat hermetically and mix contlnuously , adopted key equipment for the technology of high temperature dynamic desulfidation 該產品用于將粉末狀硫化膠與軟化劑、活化劑及水等置于罐內,在連續攪拌下密閉加熱,以使膠粉達到均勻有效膠硫目地,是采用高溫動態脫硫新工藝的關鍵設備。

This style bag is used primarily for plastics , construction material , garbage , and some other pulverous and granular products 適合包裝的產品化工原料,糧食,面粉,建筑材料,化肥,塑料粒子等。