The development of radial horizontal well drilling technology was under the studies on swirling jet theory and rock failure mechanism.

旋转射流理论和破岩机理研究，研制了径向水平钻井技术。

youdao

Well fasteners Co., Ltd. Wenzhou swirling production of fasteners in the domestic leading level.

温州恩漩紧固件有限公司生产的紧固件在国内具有领先水平。

youdao

The debut comes amid the IPO rumors swirling around another automaker, albeit one slightly more well-known, General Motors.

FORBES: GM: To Bankruptcy And Back Again