sampler drill meaning in English

取样钻机

In the following several chapters , the paper introduces the main design procedures , including " selecting the scheme " , " calculating the parameters of technique specialty " , " the constitution and characteristic of the driller " , " the design calculation and calibration of the crucial parts " . then discusses the drilling technology and introduces the work principle , the complexion of the sampler drill " s installation and testing . at last , the paper generalizes the design and the experimentation , points out the next target
分“总体方案的选择” 、 “技术特性参数的确定” 、 “钻机组成和特点”以及“关键部分结构的设计计算和校核”几个部分；然后是钻进工艺的讨论，并介绍了三套取心钻具的工作原理以及室内安装、调试、实验的情况；最后总结了本次设计及实验情况，并指出下一步的努力方向。