取心钻头

coring bit

取心钻头

corgun 井壁取心器 | coring bit 取心钻头 | coring bullet 取心弹

diamond coring bit

金钢石取心钻头

牙轮取心钻头coring cone bit | 金钢石取心钻头diamond coring bit | 硬质合金取心钻头hard metal coring bit

hard metal coring bit

硬质合金取心钻头

金钢石取心钻头diamond coring bit | 硬质合金取心钻头hard metal coring bit | 涡轮取心钻头turbo-core bit

coring bit,core bit

取心钻头

取心钻进|core drilling | 取心钻头|"coring bit,core bit" | 取心钻压|coring weight

coring cone bit

牙轮取心钻头

取心钻头coring bit | 牙轮取心钻头coring cone bit | 金钢石取心钻头diamond coring bit

bit cutting angle

钻头切削角

bit crown 金刚石取心钻头冠部 | bit cutting angle 钻头切削角 | bit cuttings 钻屑

core cone bit

牙轮取心钻头

coring crown 金刚石取心钻头 | core cone bit 牙轮取心钻头 | core basket 岩心爪

core boring method

取心钻探法

core bit 岩心钻头 | core boring method 取心钻探法 | core breaker 岩心提取器

core drill bit

岩芯钻头

core cone bit 牙轮取心钻头 | core drill bit 岩芯钻头 | core drill for wood working 木工空心钻

core drilling bit

取心钻头

coring drill 取心钻具 | core drilling bit 取心钻头 | core bit 取心钻头

colonial rule：殖民统治

colonial protectorate;殖民保护地;殖民被保护国;; | colonial rule;殖民统治;; | Colonial Secretary;辅政司;;

matrimonial agency：婚姻介绍所

21 deep love 深沉的爱情 | 22 matrimonial agency 婚姻介绍所 | 23 lover,sweetheart 情人