护圈
guard ring
retainer
盒式密封
cartridge seal
环槽式密封面
ring type joint face
环槽式密封面对焊法兰
ring joint welding neck flange
环槽式密封面法兰连接
ring type joint face flanged
黄油密封
grease seal
机械密封
contact seal; mechanical seal
机械面密封
mechanical face seal
合法保护
legal protection
合法辩护
legal defence
核对保护
check protect
衡流保护方式
current-balance protection
猴保护试验
monkey-protection tests
护
be partial to; protect; shield
护岸
revetment
护板
cover sheet; plate(-type) guard; wearing plate
护壁板
baseboard
护臂
guard arm
护病护士
sick nurse
护场员
chucker-out