A hundred years ago coronary heart disease was virtually unknown in Europe and America.在100年前冠心病几乎不存在于欧洲和美洲。Cato , an influential Roman thinker, 000 years ago, praised its medical value.CatotheElder是两千年前一位古罗马很具影响力的思想家, 以...
Mechanization happened years ago on the farms of Islay.数年前,艾莱的农场就实现了机械化。Rationing had put an end to a surfeit of biscuits long ago.定量供应很久以前就结束了饼干过剩的状况。Their water was turned off weeks ago without explanation.他们的水在几周以前就毫无...
She dropped a clanger when she mentioned the broken window.她提到打碎的窗子时说得真不是时候.She dropped a clanger when she mentioned his ex - wife.当她提到他的前妻时,真是哪壶不开提那壶.He dropped a clanger.他弄了个大笑话....
这种重要的碳化物向晶体内和晶体间沉淀.This important carbide precipitates both inter and intragranularly.Fe -Cr-C 耐磨堆焊合金中初生碳化物生长方向的控制.Orientation control of primary carbide in Fe - Cr - C hardfacing alloys.提出了避免碳化物带状偏析的有效措施.The effective m...