但经过多次现场使用，证实全通径选择测试阀还存在某些不足，需要进一步完善和改进。

But by many times of field applications, some shortages for bore hole selective tester is tested which needs a good completion and dev...

youdao

但经过多次现场使用，证实全通径选择测试阀还存在某些不足，需要进一步完善和改进。

But by many times of field applications, some shortages for bore hole selective tester is tested which needs a good completion and dev...

youdao