start-stop mechanism

To make this a pull system, it needs a mechanism allowing the downstream process to somehow signal the upstream process to start working.

而为了使其变成拉动式系统，还需要一种机制来使下游工序以某种信号通知上游工序开始工作。

Start collaring with reduced throttle to the impact mechanism and feeding, let the bit work its way slightly into the rock.

开孔时，应采用最小的冲击和推进力，使钻头平稳地进入岩层。

At present, dynamic analysis of tower crane most focus on the start and brake process of lifting mechanism; the calculation method in design specifications and theoretical lifting load coefficient in all states are also aim at lifting process.

目前，国内外对塔式起重机的动态分析多集中于起升机构的起动与制动过程的动态研究，各国设计规范中的计算方法与理论中的有关动载系数亦是针对起升过程而言。

Research on the Mechanism and Characteristics Behavior of Y-shaped Sinking Pipe Pile under Vertical Loads The artificial digs the bore stake to start construction the familiar quantity problem analysis

Y形沉管灌注桩竖向承载机理及特性分析沉管灌注桩施工中常见质量问题及其防治措施

In order to hold Olympic Games frugally, Beijing should start from the gymnasiums and stadiums which have the biggest risk, and proceed with system, mechanism, idea and efficiency, and include them in the track of legal system management.

北京勤俭办奥运要从风险最大的体育场馆做起，更要从制度、机制、观念和效率入手，并纳入法制管理的轨道。