It significantly improves the efficiency of steel tube, via the adjustment of position controllers data according to practical working circumstances.

根据生产实际，调整位置控制器的数据，使生产节奏显著提高。

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Mounts motors, transformers, controllers and lighting fixtures into position and completes circuits according to diagram specifications.

安装电机、变压器、控制器和照明器材到指定位置，并根据图纸描述完成整个回路。

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For decades, controllers relied on position reports over high-frequency radio every hour or so, competing for air time with fishing vessels and all kinds of other traffic.

WSJ: How New Air-Traffic Control Systems Operate Over Oceans