We therefore write the formal mechanism in equations ( 47 a ), ( 47 b ) and ( 47 c ) in which ds is a donor additive.因此,我们把正式的反应历程定成方程式 ( 47a ), ( 47b ) 和 ( 47c ),式中ds是 给电子添加剂.P 300 PL was negatively correlated with the ...
当了20年的烟鬼后，纳特先生戒了烟。After twenty years as a chain smoker Mr Nathe has given up the habit.我在家乡宾夕法尼亚州的纳特罗纳海茨当了个油漆匠。I went to work as a painter in my hometown, Natrona Heights, Pennsylvania.尽管这封信对班纳特家的态度很高傲, 但它开始消除伊丽莎白对达西的偏见....
The utility model discloses a grab handle rotatable hacksaw.本实用新型公开了一种握柄可转式钢锯.The cause of brittle fracture on hacksaw blades - blank were analyzed.检验分析了机用锯条坯脆断的原因.Hacksaw, how to use file?钢锯 、 锉刀怎么用?...