金刚石钻孔 meaning in Chinese

diamond boring

Rotary core drilling equipment - rotary core drilling equipment - specification for wireline diamond drilling equipment - system a . metric units
旋转钻芯设备.旋转钻心设备.钢绳金刚石钻孔设备规范. a系统:米制单位
Shanghai jeichu machinery & electric co . , ltd . is manufacturer specialized in research , production and sales of diamond core drill , will saw and diamond series tools
上海杰出机电有限公司是集研发，生产，销售于一体的金刚石钻孔机、墙锯机以及金刚石系列工具的专业制造商。