中杆

In-situ monitoring gave the following results: 1 a tension stress zone occurred at the bottom of reinforced rock mass which indicated that the role of rock bolting was remarkable; 2 stress concentration at surrounding rock of main shaft was gradually transferred from shaft wall to complete rock mass far from shaft center; 3 vertical displacement was gradually smaller from up to bottom and from center to outside of the reinforced loose rock mass.

首先，建立了主溜井三维有限元计算模型，模拟了主溜井围岩的塌落破坏过程和加固后的加固体的稳定性及变形特性；同时，还采用多点位移计等对加固体的稳定性进行了实地监测。计算结果表明：网棚锚注加固体的纵剖面上的压力和位移规律是①加固体下部局部出现拉应力区，表明锚杆的使用是合理的；②加固体内的应力由塌落中心向周围围岩过渡，应力越来越大，最终将荷载传至围岩中；③从下到上下沉逐渐减小；④从加固体中心到周围下沉位移逐渐减小，且近似一条抛物线。

2 An arrow will be scored according to the position of the shaft on the target face.

9.6.2每箭以中靶后箭杆嵌入环靶的位置计环值。

These problems were all solution under the help of my teacher and classmates, because the entire transmission system requests the transmission quite is big, therefore used the structure to be compact, velocity ratio big worm gear worm drive; regarding two kind of different working speeds, used has dialed forks with the twin gear combination realizes between the different speed transformation; regarding the screw tap break, the decayed teeth phenomenon solution is in attacks in the refuse silk to establish the friction disk transmission, may solve this problem well using the friction disk transmission characteristic, now the Dragon Gate type taper has been basic designed, its performance has been waiting for the production practice the confirmation.

这些问题在老师和同学们的帮助下都已基本解决，由于整个传动机构所要求的传动比较大，故采用了结构紧凑，传动比大的蜗轮蜗杆传动；对于两种不同的工作速度，采用了拨叉和双联齿轮的组合来实现不同速度之间的转换；对于丝锥断裂，烂牙现象的解决办法是在攻丝头中设置摩擦片传动，利用摩擦片传动的特性就可以很好地解决这个问题，现在龙门式攻丝机已基本设计出来，其性能正在等待生产实践的验证。

Oil pumping with sucker rod takes a large proportion in mechanical oil production, and is one of the main energy-consumption equipment.

有杆抽油在机械采油中占有很大比例，是油田主要耗能设备之一。

For sucker rod pumping system, it commonly used the explicit difference method to evaluate a rod pumping performance.

对石油开采中的有杆抽油系统，通常采用显式差分法进行求解。

In this dissertation, the static non-linear behavior of space member-system structures which are widely used in structural engineering is studied.

本文对结构工程中常用的空间杆系结构的静力非线性性能进行了研究。

NXL Series strain clampis suitable for distribution wire up to 10kV,fixing the aerial insulation aluminium conductor or naked aluminium conductor on the rotate angle or insulator of terminal strain pole, and then fixing and tighting the aerial conductor ,insulation cover and strain clamp are used together.

NXL系列楔型耐张线夹适用于10kV及以下配电线路中，将架空绝缘铝导线或裸铝导线固定在转角或终端固定在转角或终端耐张杆的绝缘子上，从而将架空导线固定或拉紧，绝缘罩与耐张线夹配套使用，起绝缘防护作用。

This measurement indicates your ideal stem length.

这个尺寸表明你的理想中的杆长。

The gear shift selector is in the traditional position on the center console, unlike the steering column-mounted lever found in the E-Class sedan.

变速杆选择是传统上的立场中控台，不像转向柱式杠杆发现在E级轿车。

This article aims at the cam - roof bar type multi-purpose hill planting which formerly developed with the shortcoming of sowing uneven.the design has proposed one kind of new style called integrated steering wheel lever opening hill planting

本文针对先前研制的凸轮－顶杆式多功能穴播器在播种作业过程中出现的播种不均、播种质量不高的缺点和不足，设计提出一种新式的集成式舵轮杠杆开启穴播器。

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