appro

We analyse environmental problems in city construction and put forward appro ˉ priate prevention and control measures .

本文分析了城市建设施工所引起的一些环境污染问题，并提出相应的防治措施。

We have the goods on appro for a week .

我们这些货品一星期内包退包换。

The paper studies electron nonlinear steady motion equation in free electron lasers with axial magnetic field by the perturbed appro ?

本文用扰动方法，逐级求解了带导引场圆极化自由电子激光器的电子非线性稳态运动方程。

Simulation results show that the optimal common-track constellation can provide favorable coverage performance to China with fewer satellites , and hence is appro .

仿真结果表明，该类型星座能够以较少数量的卫星为我国提供良好的覆盖性能，适于我国的区域覆盖卫星通信系统采用。

A novel appro a ch using ant algorithm is proposed to optimize the multicast routes and this app roach is fully distributed .

提出了一种新颖的基于蚂蚁算法的多播路由优化算法，该算法是完全分布式的。

The appro ches they adopt to improve the accuracy are as follows : removing casting error of the blank holes , improving the rough-finishing quality of the piston pin holes , carefully designing the special tools and better the process in pin hole machining .

提高精度的途径是；消除毛坯孔的铸造误差、提高活塞销孔的粗加工质量、注重加工销孔专用工装的设计和加强销孔加工的工艺安排。