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a device that is mechanically or electrically coupled to the chopper to cause the rectifier switch and the beam leaving the chopper to change simultaneously. ÓÐÒ»¸ö×°Öûúе»òÓõçÁ¦Á¬½Óµ½ÕñÁ÷ת»»Æ÷ÉÏÒýÆðÕñÁ÷ת»»£¬È»ºóµç²¨À뿪ת»»Æ÷±äΪͬ²½¡£ |
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