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sổ tay kỹ thuật cơ khí

Sổ tay kỹ sư cơ khí P5 doc

Sổ tay kỹ khí P5 doc

Kĩ thuật Viễn thông

... and thepacking gland. This extension is gas filled so that the packing gland temperature stays close toambient. For low-speed bearings babbitting is usually acceptable, as is graphite...
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