1. a hollow cylindrical bit that is the cutting part of a core drill
core bits 例句
英汉例句
the experiments have been carried out to compare the application of ni co matrix diamond core bits to ni mn matrix diamond core bits.
对电镀镍锰胎体金刚石鉆头和镍钴胎体鉆头的使用情况进行了对比。
it is proved that ni mn matrix diamond core bits are suitable for drilling hard and broken rock, strong abrasive formation and soft hard alternate formation.
实践证明,镍锰胎体鉆头特别适用于鉆进坚硬破碎、强研磨性地层和软硬交替的地层。
the selections of core bits and tools, and ascertainment of technology measures are introduced in detail through the coring practice in one slim hole;