self lubricator

1 2 3 4 5 ... 自给润滑泵^ self-lubricating pump 自动润滑器^ self-lubricator 自锁模氦氖激光器^ self-mode-locked HeNe laser ...

"信号强度... ... "self-lubricating brush " 自润滑电刷" "self-lubricator " 自润滑器" "self-magnetic " 自磁的,自感磁" ...