起出通井管柱,检查通井规擦痕.Pull out the drifting string and check the gauge for scratch.但下放前要通井,不易过快,下放到预定位置时必须有一套管接箍缝,具承上压能力小.When the bridge plug comes to desired position, there must be a casing coupling seam.广泛应用于油田用修井机 、 通井机及其它...
The ventral nerve cord is covered externally by a peritoneum.腹神经线外被以腹膜.Conclusion: MRI showed cerebellar hemisphere, ventral pons, middle cerebelllar peduncles and olive atrophies in OPCA patients.结论: OPCA的MR表现 主要为小脑半球 、...
Furthmore, it can not neglect the relations between Danelaw and the other part of England.同样也不能单纯从术语“Danelaw”就可推断出一些关于丹麦人定居的特征.At last, the religion of Danelaw is important.最后, 丹麦区的宗教....
This guy, Jack Smith, does he go by the name of Jackal?这个叫杰克·史密斯的家伙是不是还有个名字叫杰凯尔？This process go by the name of dissimilatory reduction.这种过程被称为异化铁还原作用....