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It also supplies london underground with rail lubricant .

该公司还为伦敦地铁供应铁轨润滑剂。

Both come pre-lubricated with a silicone-based lubricant .

它们的润滑功能都来自于一种有机硅成分的润滑剂。

Cash for tips can be a vital lubricant of press freedom .

向爆料者支付酬劳对新闻自由而言，是一种必不可少的润滑剂。

In the meshing of the german constitution with european law , proportionality provides a lubricant .

在德国宪法和欧盟法律的衔接上，比例原则起到了润滑剂的作用。

In addition , openhydro 's generators do not need lubricant , which considerably reduces the need for maintenance .

除此，openhydro发电机不需要润滑剂，这也大大减少了维护的必要性。