... seal， packing 迫紧封 porcelain seal-packing equipment 陶瓷封装专用设备 high pressure seal packing 高压轴封迫紧 ...
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短语
液封迫紧
hydraulic seal packing
高压轴封迫紧
high pressure seal packing
迫紧油封
Packing oil seal
封轴迫紧
packing gland
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