465 The rotation number of the machine is on the increase. 机器的转数在增加。
466 After a few hours running, we shall check the machine; and replace the oil , if necessary. 在数小时运转后,我们将检查机器;并在必要时换油。
467 We shall select the suitable grease in accordance with the lubrication chart. 我们要根据润滑表来选用合适的油脂。
468 What is the trouble with the machine? 这机器有什么故障?
469 I think the trouble lies here. 我想故障在这里。
470 It is necessary that we should repair it at once. 我们必须立即修理它。
471 We shall give the machine another trial at 10 oclock. 我们将在十点钟把这台机器再试一次。
472 The machine runs perfectly well, it had been operating with a continuous run of 72 hours. 这强机器运转很好,它至今已连续运转了七十二小时。
473 The result of the test run satisfied us. 试车结果使我们很满意。
474 It is not doubtful that the test run will be successful. 试车将会成功是无疑的。
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