经试用，各项指标满足设计要求。

After test run, its index meets the design requirements.

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该系统经试用达到设计要求。

Through experiment, the system satisfies the design requirements.

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经试用，效果极佳。

By probation, the effect is extremely excellent.

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经试用，效果极佳。

By probation, the effect is extremely excellent.

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