单词	item sampling
释义	item sampling试题抽样
随便看	injection-schlieren-- injection-stretch injection-schlieren; injection-stretch injection screw injection seeding injection silicone rubber injection sprav pipe injection start pressure injection station injection steel making injection-stretch injection syringe injection temperature injection timing injection-to-counting injection-to-counting time injection transformer injection type lubricator injection valve injection valve shear plug injection velocity injection vessel injection voltage injection volume injection water injection water cooling