Pots, pans, kettles and mops are kitchen utensils.锅 、 盘 、 壶及拖把是厨房用具.These kettles are all copper.这些水壶全是铜的.These aluminium kettles have been marked down ten percent because of minor flaws.这些铝壶因为有些小毛病而减价百分之十....
A high - power diode laser power supply controlled by microprocessor is presented.介绍了一种利用单片机控制的大功率半导体激光驱动电源.This paper describes the principle of microprocessor ultrasonic range finder.主要介绍微电脑超声测距仪的工作原理.A Control System ...
现在天气冷极了，地面都冻硬了。It was bitterly cold now and the ground was frozen hard.把它冻硬，但是不要硬得像石头一样。Freeze it only until firm but not rock solid.雪橇在冻硬了的雪上顺利滑行.Sledges run well over frozen snow....