能量扩散式X射线分析仪
energy dispersive X-ray analyser
非扩散性红外线气体分析仪
nondispersive infrared gas analyzer
晶体管指零仪
transistor zero pointing meter
大直径径向渗透率仪
full diameter radial permeameter
晶体管探鱼仪
transistorized fish finder
电磁套管测厚仪
electromagnetic casing-thickness logging tool
ETT