The process flows of metallic surface pretreatment and tunnel cascade phosphating were introduced respectively.
分别介绍了金属表面前处理和隧道式喷淋磷化工艺流程。
It is a built-in method that some crisscross small tunnel sheds are embedded in the overburden layer.
这是一种内嵌支护方式,即在覆盖层中植入纵横向小隧道棚支护结构,形成围岩与支护结构共同作用的支护体系。
AIM: To ascertain the effectiveness and safety of using the tunnel TURP technique combined with interstitial laser coagulation (ILC) for the treatment of benign prostate hyperplasia in high risk patients.
目的 :评估隧道式TURP +ILC治疗高危前列腺增生症临床价值 。
