主要问题

In view of the present major problems of the open-loop control system for economic CNC lathe with stepping motor as feed motor, a newtype of closed-loop control system for stepping motor has been presented in the paper.

针对目前以步进电机驱动的经济型 CNC车床开环控制系统存在的主要问题，提出了一种新型的步进电机闭环控制系统。

According to the problems of air pollution character in Qingdao, scientific and operable pollution controlling measure is established.

针对青岛市大气污染存在的主要问题，经进一步分析提出了具有科学性和可操作性的环境空气污染控制对策。

Based on the generalized description of LS code, we further gave the standard and method to hunt the optimized GLS code.

我们进一步分析了LAS-CDMA系统在组网上的主要问题，提出了给每个小区不同时间的无线子帧分配不同的LA码来实现动态组网的方法。

This paper outlines some of the main requirements which should be addressed.

本文将概述一些这方面的存在的主要问题及其解决方法。

The relevant hardware platform was designed, and such key technologies in single chip microcomputer system as video acquisition, image processing, judgment of vehicle's off tracking and output of alarm were introduced in detail.

分析了架桥施工中运梁车工作的特点，针对其在车辆导向方面所存在的主要问题，并结合现场需求，设计了一种基于单片机实现的嵌入式图像处理的新型车辆辅助导向装置，完成了相关硬件平台的设计，给出了在单片机系统中实现视频采集、图像处理、车辆跑偏判断和报警输出等关键技术细节的具体方法。

When they do malfunction, the main problems are caused by short-circuits and overloading with appliances.

当他们排除故障时，主要问题是短路和电器超载造成的。

The crisis of overpopulation is still the main problem we are facing today.

我们今天面临的主要问题仍是人口过剩的危机。

The ownership of the land is the main issue.

该土地的所有权是主要问题所在。

This is the first part of this paper.

这是本文第一部分讨论的主要问题。

The author introduces the research and the development of partial difference equations, and gives the main questions which are studied.

作者简单介绍了一下偏差分方程定性理论的研究及发展情况，给出了本文研究的主要问题。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！