The causes of the wearable zone dropout were analyzed by the metallography analysis and SEM.采用金相分析和扫描电镜分析方法,分析了钻杆接头喷焊耐磨带脱落原因.The strain of the proeutectoid ferrite in hypoeutectoid steel drawing measured and analyzed by ...
The gadget is used to artificially inseminate cows.这个器具被用来为母牛实施人工授精。Females, in other words, would rather choose which males inseminate them.换句话说, 雌性更愿意选择那些让它们授精的雄性.It also states prophase work, transporting and insemina...
The traffic in this city never lets up, even at night.这个城市道路上的车辆从来就没少过，甚至晚上也不例外。He dresses in a way that lets everyone know he's got authority.他的穿着打扮让大家都知道他已经掌权了。She lets us do anything, even bounce on our beds.她放任我...