Knowledge gained on the trip will be used to develop fishing techniques or new gear that are much more selective.
在这次航行中学到的知识将用于研发捕鱼技术或新装置，这将具有更多的选择性。
2
The paper will selective study the theoretical analysis and experimental research of ultrasonic assisted gear honing machining based on previous theoretical study.
在前期理论研究的基础上，本课题着重研究超声辅助珩齿加工理论及加工实验。
3
A kind of selective procedure of change gear which is operated more conveniently is presented. It has a better generality. It can quickly selects all compositions whose accuracy are given.