求翻译：12、判断传输系统是否良好方法是：开启指示光，观察指示光的光斑，如光斑不位于传输系统末端、亮度低、不圆整，说明传输系统可能损坏或工作不正常。是什么意思？

12, to determine the transmission system is a good method: open indication light, observe the instructions of the spot of light, such as the spot at the end of the transmission system, low brightness, not rounded, indicating that the transmission system may be damaged or not working properly.

12, determines the transfer system is good: turn indicator light, and the direction of the light, such as the transport system is not in the end, low brightness, not rounded, the transmission system may be damaged or not working properly.

12th, is the judgment transmission system whether good method: Opening instructs the light, the observation instructed the light the facula, like the facula is not located the transmission system terminal, brightness lowly, not round entire, explained the transmission system possibly damages or the

12, determine whether the transmission system is the good method: opening indicates light observations indicate light spots, such as spot is not located in the transport system, low brightness, not rounded at the end, the transmission system may be corrupted or is not working properly.

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