阀调节螺钉锁紧螺母
valve adjusting screw locknut
阀调整螺钉锁紧螺母
valve adjustment screw locknut
摇臂调整螺钉锁紧螺母
rocker arm adjustment screw locknut
内螺纹板刀
automation system architecture
高压螺纹锁紧环换热器
High pressure thread locking ring heat exchanger
螺纹锁紧环高压换热器
threaded locking ring high pressure heat exchanger
螺纹锁紧环式换热器
screw-lock ring type of heat exchangers