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...
Shirley leaned forwards on the table, her taper fingers interlaced and compressing each other hard.谢利欠身向前,靠着桌子, 尖细的手指交叉在一起,彼此钩得紧紧的.A French aeronaut, M. Meunier , tried to attain his end by compressing air in an interior...