Its hydrogenation activity in aromatics saturation and ring opening activity were investigated.芳烃加氢饱和及开环反应是一种提高柴油十六烷值的有效途径.This article reviews researches in various catalysts for alkyl aromatics peroxidation.烷基芳烃过氧化反应是酚...
This luxurious talcum lotion restores softness and suppleness to dehydrated skin.这种奢侈的滑石润肤露能使缺水的皮肤恢复柔软与弹性。Bunn restores from the heart acceleration, already joined the entire unit training.布恩从心脏加速中恢复, 已经加入全队训练.This curre...
Semiconductors containing such impurities are called p - type semiconductors.含有这类杂质的半导体叫做P型半导体.It is not possible to name any particular conductivity at which metals end and semiconductors begin.不可能说出在哪个特定的导电系数处是金属和半导体的分...