And considering the features and particular requirements of deepwater drilling, a program for deepwater DGD well casing program design and optimization is developed.
结合深水钻井的特点，考虑钻井施工的特殊要求，开发了深水双梯度钻井井身结构设计及优化程序。
2
The problem of low sensitivity will become seriously if DOP is used as the monitor signal of DGD in SCM system.
在光副载波复用(SCM)系统中若使用DOP作为DGD的监测信号将会遇到灵敏度低的问题。
3
Electrical power, changing with differential group delay (DGD) and detected from an optical communication link, can be used as feedback signals of compensating for PMD.