The production trial run, which may involve the customer where necessary, is used to check the effectiveness of the production process.
生产试运行，当需要时可请客户参加，是用来检查生产过程有效性的。
We gave the machine a trial run before using it on the production line.
我们先让这台机器进行试转，然后再用于生产线。
We gave the machine a trial run before using it on the production line.
我们先让这台机器进行试转，然后再用于生产线。
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