The constant light path system is designed to make the length of light path in the process of machining unvarying by means of equalizing it.
笔者设计的恒光路系统通过对光路进行补偿，而使加工过程中光路长度恒定不变。
The constant light path system is designed to make the length of light path in the process of machining unvarying by means of equalizing it.
笔者设计的恒光路系统通过对光路进行补偿，而使加工过程中光路长度恒定不变。
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