The diisobutyl dicarboxylate was prepared by using acid and isobutanol as material and acid as catalyst.以二羧酸和异丁醇为原料,用硫酸作催化剂,合成二羧酸二异丁酯.Butyl cinnamate was synthesized from cinnamic acid and butyl alcohol using tungstosili...
Acid rain is not straightforwardly attributable to the burning of coal.酸雨并非简单地由烧煤造成。Nor is acid rain always, and universally, a bad thing.酸雨也并非在任何情况下都是坏事。This comedy of contemporary manners is told with compassion and ac...
These plants have a tendency to grow in the more rural areas.这些植物大多生长在偏远的乡村。The wires usually have a tendency toward crystallization and corrosion.挂线通常容易硬化和腐蚀.Thus, there is a built - in tendency towards the accumulation...
The applause acted on her like a shot of adrenaline.掌声犹如给她注射了一支强心剂.He felt a surge of pure adrenaline as he won the race.他赢得比赛时感到一阵激动.We'll start with a bit of dancing to get the adrenaline going.我们先跳一下舞热热身....
The dynamic SIF variation was found to lag behind the stress - pulse impingement by several microseconds.人们发现,动态应力强度因子的变化滞后于应力脉冲冲击几微秒.Shoulder impingement syndrome is one of the most common painful shoulder disorders.肩夹击...