油都用在高负荷工业齿轮系统，如直齿圆柱齿轮，锥齿轮，行星齿轮和蜗轮副。
GEARMASTER PGP oils are used in high-load industrial gear systems such as spur gears, bevel gears, epicyclical gears and worm gear pairs.
并在蜗轮蜗杆油现状的基础上提出了值得思索的几个问题。
Based on the actuality of worm gear lubricant, some research topics that are worth thinking are also brought forward.
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