1. Get a 12 1/4 Smith bit ready准备一个12 1/4史密斯钻头2. Don’t forget to put the TOTCO support ring in the bit sub(for the deviation survey tool).别忘了在钻头接头内安放测斜承托环3. The thread type of the bit is 6 5/8 regular
小学生英语日记120字带翻译草莓园采摘记Strawberry picking notes 草莓园采摘记拼音的写法和格式Today, the sun went to my room early in the morning, and it was a nice day.今天,太阳早早的跑到我的房间里,又是一个好天气。Pick up my friends to go to the hig
1. Get a 12 1/4 Smith bit ready准备一个12 1/4史密斯钻头2. Don’t forget to put the TOTCO support ring in the bit sub(for the deviation survey tool).别忘了在钻头接头内安放测斜承托环3. sokoThe thread type of the bit is 6 5/8 reg