15.In this paper,the methods of producing sodium diacetate have been described.It is widely used as high effective preservative in grains,dodders,foods and so on.
论述了醋酸钠制备方法及其在防腐、保鲜、洗涤等领域应用。
16.Ambipolar transistors are attractive for realizing complementary-like organic integrated circuits, which operate with low power dissipation, wide noise margins and great operational stability.
目前,国际上有机极性晶体管研究由受到种种限制性能并不理想,很少能获得对称性良好高性能器件。
17.The most stable biradical rule,which was put forward at the beginning of the discovery of the P-B reaction,was used to explain its regioselectivity.
18.The studies on the perferable conditions for synthesizing diglycol dioleate, by the esterification of diglycol monoleate with oleic acid via acid catalysis, were reported.
研究了以二甘醇单油酸酯和油酸作原料进行酸催化酯化反应合成二甘醇油酸酯适宜反应条件。
19.The innovative DSG dual-clutch gearbox from Volkswagen offers previously unattained shifting comfort that lifts what were once well-defined boundaries between automatic and manual transmissions.
20.A new point is put forward that transverse bimoment has different influence on the two kinds of cross section thin-walled beams, and on their St-Venant principle conditions. 2.