Pivots

例句:

• It was then that Clennam learned for the first time what little pivots this great world goes round upon. 查尔斯·狄更斯. 小杜丽.
• The ends of the balance staff are made very small so as to form very delicate pivots which turn in jewel bearings. 佚名. 神奇的知识之书.
• One method of producing the same effect is to make the cylinders oscillate on pivots, as contrived by Mr. Murdoch, in the first model steam carriage, made in 1784. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• The opening being then closed by a screw-nut, the apparatus, which is mounted on pivots, with an appropriate stand, is swung backwards and forwards like a pendulum. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• The balance wheel moves very rapidly, and, therefore, its movement must be as free as possible from retarding friction, so its bearing pivots are made very small. 佚名. 神奇的知识之书.
• It was turning upon pivots, and with it a section of the floor directly in front of it was turning. 埃德加·赖斯·巴勒斯. 火星战神.

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