此硬度计的依据是矿物的相对研磨能力.This scale is based on the relative abrasiveness of minerals.会使用相关的测量工具: 游标卡尺, 高度尺,角度尺,硬度计.Be familiar with using measure equipment: caliper, height gauge, etc.有硬度计、 、 磁粉探伤机等多种检测检测仪器设备.A hardness, magne...
His objective was to kill the space station project altogether.他的目的是使空间站项目全面停止。Equipment on the space station is teleoperated from Earth.空间站上的设备是从地球遥控的。An amazing set of experiments performed on the international space s...