岩板的厚度多少算正常?
YANBANZHENGCHANGDEHOUDUYIBANLAISHUODADAO1GONGFENZUOYOU,RUGUOYONGZUOBEIJINGQIANG,HOUDUKEYIDADAO6HAOMIHUOZHE9HAOMI、12HAOMI,YANBANDEHOUDUSHINENGGENJUXUYAODINGZHIDE。RUGUOSHIERCIZHUANGXIU,KEYIXUANZE3HAOMIHOUDEYANBAN,YEBIJIAOSHIHESHANGQIANG。 YANBANSHIYIZHONGZHUANGXIUSHICAI,
标签: 2020-11-18