OSDabbr.(美国)海洋科学部（=Ocean Science Division)abbr.屏幕显示(=show on-screen)OSabbr.操作系统=（Operating System）oscillating load振动载荷,变载荷osmoconditioning渗透调节osculating block密切块osmotic diuresis渗压性利尿,渗透性利尿os postcleithrum后匙骨oscillator timer振荡计时器os antarticulare前关节骨osculating curve密切曲线Osmia haemorrhoan.丽壁蜂oscillating wing振动机翼