The cry occurs when air is brought into contact with the baby's larynx.婴儿的喉咙接触到空气时,就会哭出来。Let me have a look at your larynx .让我看看你的喉部。Calf diphtheria, is characterized by bilateral necrosis of the mucous membrane of ...
The container is invisible until you shine an ultraviolet light on it.那个柜子只有用紫外线照射才可以看见。It's called ultraviolet rays.它被叫做紫外线.The ozone layer surrounding the earth protects our skin from being hurt by the ultraviolet...
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...