... Constant Length 恒定长 constant length system 定长制 constant length field 常数长度栏 ; 定长栏 ...
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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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