这种情况除非阀门及其部件被人工检测后才会被发现。
Such conditions are not detectable unless the valve and its components are physically removed and inspected.
彩色印刷过程中，人工检测套印误差是一项费时且低效的工作。
In color printing, detecting printing registration deviation by man is time-consuming and inefficient.
目前粮食水分测试的方法除去相对比较落后的人工检测外，多依赖于进口设备。
At present, some lagging manual test is still being used in some grain moisture inspection, while other test mainly relies on imported equipment.
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