| 1. | A new tool of preventing drill pipe sticking in air - powered dth drilling
气动潜孔锤钻进中的新型防卡钻具 |
| 2. | A designing conception on the model t - 150 high pneumatic pressure ring - shaped dth drill
150型高气压环形潜孔钻机的设计构想 |
| 3. | Dth series telephone
Dth系列电话 |
| 4. | Causes for abnormal jamming of drill tools of simba 261 dth drill and control measures
261型潜孔钻机非正常卡钻的原因及其控制方法 |
| 5. | Application of casing drilling and dth drilling combined technique for boulder formation
潜孔锤复合性钻进工艺在河床卵砾石层中的应用 |
| 6. | Study on dth reaction of guinea - pig induced by several recombinant antigen of m . tuberculosis
几种结核分支杆菌重组蛋白诱发豚鼠迟发型超敏反应的研究 |
| 7. | His heavy pitying gaze absorbed her news . his tongue clacked in compassion . dth
他的目光表露着深切的怜悯，全神贯注地倾听她这个消息，同情地砸着舌头： “啧 |
| 8. | Application of dth drilling with simultaneous casing in high pressure spiral jet grouting technology in pebble formation
潜孔锤跟管钻进技术在卵石层高压旋喷灌浆工艺中的应用 |
| 9. | Sss . dth , dth , dth ! three days imagine groaning on a bed with a vinegared handkerchief round her forehead , her belly swollen out
想想看，她在床上哼了三天，额头上绑着一条泡了醋的手绢，挺着个大肚子。 |
| 10. | 8 it can be used with various drilling method such as carbide bit drilling , anger drilling , dth hammer drilling , follow - up casing drilling etc . 3
8钻机可适用多种钻进工艺方法，如合金回转钻进螺旋钻进潜孔锤钻进跟管钻进等。 |
