The effect made by rotary jetting decreases with the increase ment of Reynolds number.
旋转射流对换热的此种影响随雷诺数的增大而减弱。
The newly developed drill, XPL-20, for rotary jetting and anchor is introduced. The main features, technical data, application and structure of drill and its caterpillar chassis are briefly mentioned.
介绍了新开发的XPL - 20型旋喷锚固两用钻机的主要特点、钻机及履带底盘结构、技术参数和实践应用情况。
The newly developed drill, XPL-20, for rotary jetting and anchor is introduced. The main features, technical data, application and structure of drill and its caterpillar chassis are briefly mentioned.
介绍了新开发的XPL - 20型旋喷锚固两用钻机的主要特点、钻机及履带底盘结构、技术参数和实践应用情况。
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