Each heartbeat has two basic parts: diastole and atrial and ventricular systole.每一次心脏跳动都包含两个基本部分: 舒张期以及方式收缩期.The length in the diastole was bigger than that in the systole.在舒张期其可视长度比收缩期长.What are the reason that the prob...
Clarke kept talking the price up, while Wilkinson kept knocking it down.克拉克不断把价格向上抬，而威尔金森则不断往下压。Mr Clarke has shown himself to be resolutely opposed to compromise.克拉克先生已表示自己坚决反对妥协。I take my hat off to Mr Clarke for takin...
Antheral introversion or extroversion, slit or aperture leave.花药内向或外向, 纵裂或孔开.The staminal filament of feverfew is detached, antheral combination, say to get together medicine is staminal.菊科植物的雄蕊花丝分离, 花药联合, 称聚药雄蕊.Valve is...