single cavity mold 单腔模具

single cavity roll 空心滚筒

single-cavity klystron 单腔调速管

single-cavity magnetron 单腔磁控管

single cavity structure 单腔结构

single-cavity tunable lasers 单腔调谐激光器

single cavity maser amplifier 单腔量子放大器

single cavity body of valve 单腔阀体

Single cavity expansion silencer 单腔扩张式消声器