中杆

On the base of studying the forming mechanism of spire ditches in deep-hole boring process, this paper analyses theoretically the effect of the boring bar diameter on the oscillation and spire ditches and established the mechanical model.

在研究深孔镗削螺旋沟产生机理的基础上，对深孔镗削加工过程中镗杆直径对振动及螺旋沟的影响进行了理论分析及力学建模，并通过试验研究了增大镗杆直径对减小振动和抑制螺旋沟的积极作用。

The boring bar was designed into a new structure consisting of two coaxial bars. As a result, the micro-boring bar can be made with relatively smaller outer diameter, which was suitable for boring smaller and deeper hole, even the measuring and compensating sensors have been incorporated.

但是，在镗削加工中就遇到了较大困难，因为镗杆的径向尺寸受到被镗孔尺寸的严格限制，用于误差在线检测的传感器和用于误差在线补偿驱动的传感器不能直接安装在镗杆内。

"They all have a string-bearing neck that projects through a small resonator and a bow, the hair of which passed between the two strings."

这些胡琴都有琴杆，上有琴弦，琴杆从一小共鸣箱及弓中伸出，弓毛穿过两弦之间。

During the production of 200 kA pre-baked aluminum smelting pot,through the repairment of the burning and scraping damages which often occur on the contacting surfaces between anode bus bar and aluminum rod,the matter of loose contact caused by increase of power resistance and decrease of power voltage is efficiently solved,resulting in evident achievements of energy saving and economic benefits.

在200 kA预焙电解槽生产过程中，通过对阳极母线与铝导杆接触面经常出现的烧损、拉伤的修复，有效地解决了阳极母线与铝导杆接触不良导致的电阻增大、电压降升高的问题，节约了能源，经济效益显著。

The main purpose of this article is to work over and analyse dynamic specialties of the plane four bar mechanism especially crank and rocker mechanism and brace cake mechanism in the dynamic and constrained system contained with mechanical and hydraulic integration, and dynamic specialties of the plane four bar mechanism in the system made of mechanical and hydraulic integration can carry out and be easily computed by the software MATLAB to have a simulation.

本文的主要目的是研究分析机械系统和液压系统综合动态约束系统下，对机械系统单元部分选取的平面四连杆机构，尤其是曲柄摇杆机构和曲柄滑块机构的动态特性，并能通过MATLAB软件实现对机液综合机构学理论中的平面四杆机构的动态特性计算及仿真研究。

Comparing the quality of the three methods of making hollow drill steel,"drill-hole and hot-rolled with core"method is best. The present paper indicates that the prolonging life mechanisms of the new drill rod include four aspects.

本文给出H22-40SiMnCrNiMoA锥体连接钎杆制造工艺，运用&钻孔-带芯热轧法&、&热穿-热拔法&、&热穿-热轧法&三种工艺加工的H22-40SiMnCrNiMoA试验钎杆中，&钻孔-带芯热轧法&各方面的质量都是最好。

Our special and rock drill steel company total investment of 500 million s , it ' s customized produce the rock drill steel for our products, we can produce almost all kinds of rock drill steel, in the production process, H22 Rod have the largest production output , it ' s using the material of 40SiMnCrNiMo （ Silicon, Manganese, Chromium, Nickel, Molybdenum ）, and it ' s performance are better than the rod use the material of 95CrMo and 55SiMnMo.

我们的特钢公司总投资额5个亿，是专门为钎具钢而设计的，几乎能生产所有钎具钢，在生产过程中，H22钎杆的生产量最大，采用的是40SiMnCrNiMo这种材料，性能比95CrMo和55SiMnMo都要好一些，因质量稳定，供货及时，价格合理，我们公司很快成为中国最大的H22钎杆供应商之一。

The results show that the most engineering practical columns behave like the interaction of local buckling and overall buckling, and local bucklings of plates do not mean the lost of carrying capacity of overall structures at once.

用本文提出的有限条塑性系数增量初应力法分析了钢偏心压杆局部与整体相关屈曲的极限承载力，得到了中截面的屈曲模式，表明大部分的工程实际的压杆均表现出明显的局部屈曲与整体屈曲的相互作用，板件局部屈曲，并不意味着结构整体立即丧失承载力。

This is a short par 4 that is driveable by the long hitters, however an iron off the tee is the smartest shot.

在短四洞中、无论用木杆还是长铁杆开球都是可行的。

In all forms of stroke play other than foursomes, a competitor has begun his stipulated round when he makes his first stroke in that round.

在所有形式的比杆赛上，除了四人二球赛，一名比赛者在那轮比赛中打出第一杆时，他就开始了规定的一轮比赛。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐