8月23日，淮北矿业召开了杨柳矿、青东矿、袁店二矿联合试运转动员大会。

August 23, Huaibei Mining held a willow mine, Green East Mine, Mine Yuan shop two joint commissioning rally.

youdao

8月23日，淮北矿业召开了杨柳矿、青东矿、袁店二矿联合试运转动员大会。

August 23, Huaibei Mining held a willow mine, Green East Mine, Mine Yuan shop two joint commissioning rally.

youdao