the expansion and contraction of the metal金属的膨胀与收缩Contraction of the timbers left gaps in the fence.木料收缩,结果围墙露出缝来.The forces of expansion are balanced by forces of contraction.扩张力和收缩力相互平衡....
The combined contraction of the atria and ventricles is a heartbeat.心房和心室的这一系列动作合称为一次心跳.During inhalation, contraction of the intercostal muscles elevates the ribs.吸气时肋间肌收缩,提起肋骨.The surface electromyogram ( EMG ) and int...
From the garage there came the sound of Derek working a lathe.汽车修理厂那边传来德里克开动车床的声音.Let's get the lathe to turn the new piston.咱们用车床车[加工]新的活塞吧.Gradually she learned to operate a lathe.她慢慢地学会了开车床....
'氰'.''基一种单价基因,''.'氯'. ''化苯乙酮, 存在于简单的和复杂的氰化物中.A univalent radical , CN, found in simple and complex cyanide compounds.降低反应温度,提高了苯乙酮的收率.Thus , this reduced temperature of r...
从银行结单余额调到现金簿的余额.Transfer from bank statement balance to cashbook balance.是记录小额现金收支项目的现金簿.A petty cash book is a cash book for recording small cash payment....