balling-up

Analysis on balling up caused by helicoid hydraulic motor bypass valve failure in combined drilling technology EXPERIMENTAL STUDY OF ABRASIVE-CORROSIVE WEAR OF MUD PUMP LINER

复合钻井过程中螺杆钻具旁通阀刺漏造成钻头泥包分析钻井泵缸套材料磨料&腐蚀磨损实验研究

The children were balling up snow to make a snowman.

孩子们正在把雪堆成球状,做一个雪人.

Jack, I told you once, stop balling up those paper sheets, it's such a waste.

杰克, 我跟你说过, 别再把纸团成球儿了, 太浪费了.

The children were balling mud up in their hands.

孩子们正在搓泥球.

Based on analyzing the cause of balling up, through improving the performance of drilling fluid, and changing drilling parameters, the paper put forward the technical measures of prevention PDC bit balling. They help to solve the problem of PDC bit balling.

在分析泥包原因的基础上，从改善钻井液性能、改变钻井参数、精心操作等方面，提出了预防PDC钻头泥包的技术措施，有助于解决PDC钻头泥包的问题。

Research suggests that balling up the right hand and squeezing it tightly actually makes it easier to memorise lists.

研究显示，实际上，攥起右拳并握紧能让你更容易地记住列表内容。