超音波法液位元元元元元元测定
ultra-sonic method of liquid meaduremert
链接的结果文件型别
result document type of a link
现用的链接型别宣告
active link type declaration
动态链接链接库
dynamically linked library
DLL
dynamic-link library
链接的原始元素型别
source element type of a link
链接型别宣告子集
link type declaration subset