扩大氢侧回油腔的容积改进了国产机回油不畅的问题。
Expanding circulating oil cavity on hydrogen side can make circulation free.
研究了重氮烯氢向前手性烯烃单侧的非对映选择性转移。
Diastereoselective transfer of the diazene hydrogen to one face of the prochiral alkene was studied.
IR光谱分析同样反映出沥青经催化氧化后分子结构中侧链减少，芳环上的氢减少，整个芳环的缩合程度增加。
Meanwhile IR analysis showed that side chain between molecule and hydrogen of aromatic ring were decreased, condensed degree was increased in catalytic oxidation.
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