The bevel gears and the crank shafts are totally enclosed in oil chamber and require no attention, except periodical checks.
锥齿轮和曲柄轴都在油室内，除定期检查外，无需专门关注。
The bevel gears and the crank shafts are totally enclosed in oil chamber and require no attention, except periodical checks.
锥齿轮和曲柄轴都在油室内，除定期检查外，无需专门关注。
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