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ring lubrication
auto. 油环润滑
mech.eng. 油环润滑法
met. 油环润滑
tech. 油环润滑 (法); 钢领润滑; 环式供油法
ring lubrication
: 10 phrases in 5 subjects
Automobiles1
Compressors1
Metallurgy1
Nautical1
Technology6