第二种聚酰亚胺聚合物是芳香族四酸二氢化物与芳香族二异氰酸酯反应生成的。
The second polyimide polymer is prepared with aromatic tetracid dihydride and aromatic diisocyanate.
用气相色谱对低烯烃火花点火引擎燃料芳香碳氢化合物类型，环烃，烯烃，石蜡和氧化物的标准试验方法。
Standard test method for oxygenates and paraffin , olefin , naphthene , aromatic o - pona hydrocarbon types in low - olefin spark ignition engine fuels by gas chromatography.
为提高芳香族硝基化合物氢化催化剂的性能，在单铜催化剂中引入稀土元素。
Rare earths were introduced into mono-copper catalyst to improve the performance of hydrogenation catalyst for aromatic nitro-compounds.
从煤分子结构出发，煤的反应性可以用芳香环，氢化芳香环，烷烃链、烷烃键和含氧官能团的变化来描述。
From molecule structure of coal, coal reaction character was described by aromatic ring, hydrogenation aromatic ring, alkane, alkane bond, oxy-group.
手性羰基铁络合物很少被用于芳香酮的不对称氢转移氢化。
Chiral carbonyl iron systems have seldom been used in asymmetric transfer hydrogenation of aromatic ketones.
本文研究了七种芳香族碳氢化合物的气相IR激光化学，主要是等离子体化学。实验说明。
IR laser chemistry (mainly plasma chemistry) of gaseous aromatic hydrocarbons was studied with a pulsed TEA-CO_2 laser.
本文研究了七种芳香族碳氢化合物的气相IR激光化学，主要是等离子体化学。实验说明。
IR laser chemistry (mainly plasma chemistry) of gaseous aromatic hydrocarbons was studied with a pulsed TEA-CO_2 laser.
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