中杆

It can implement different path construction and deviation correction of the mole through applying a steering torque to the mole to change its working configuration and the orientation of the steering head slant face and make the mole advance according to the predetermined path. In this paper, Fussy Control is selected as the method of controlling the construction path of the mole and a set of detailed control strategy is established.

此外，针对气动冲击式轨迹可控穿孔机的施工特点，还专门设计了微型化和抗冲击的定位测量系统，以实现在施工过程中对穿孔机的监测，其测得的穿孔机实际运行轨迹用于和设计轨迹进行比较，作为对穿孔机施工轨迹进行控制的依据；以及由控向机构和挠性杆组成的控向系统，其作用是通过施加控向扭矩于穿孔机来改变穿孔机的工作模式及导向穿孔头斜面的朝向，从而实现不同性质轨迹施工和偏离修正，保证穿孔机尽可能按照设计轨迹进行施工。

What's more, a special locating and measuring equipment is designed according to the characteristics of the pneumatic percussive steerable mole, which is minisized and able to stand strong impact. By using it, the mole can be monitored during construction. By comparing the actual path to the predetermined path, the construction path of the mole can be controlled. The steering equipment comprises a steering tool and flexible pipes. It can implement different path construction and deviation correction of the mole through applying a steering torque to the mole to change its working configuration and the orientation of the steering head slant face and make the mole advance according to the predetermined path.

此外，针对气动冲击式轨迹可控穿孔机的施工特点，还专门设计了微型化和抗冲击的定位测量系统，以实现在施工过程中对穿孔机的监测，其测得的穿孔机实际运行轨迹用于和设计轨迹进行比较，作为对穿孔机施工轨迹进行控制的依据；以及由控向机构和挠性杆组成的控向系统，其作用是通过施加控向扭矩于穿孔机来改变穿孔机的工作模式及导向穿孔头斜面的朝向，从而实现不同性质轨迹施工和偏离修正，保证穿孔机尽可能按照设计轨迹进行施工。

The thrust of arch springing line during each phase is resist by corresponding tied bars. In a certain state, it is critical and important to make the correct value and reasonable time of pull of tied bars.

在某个特定状态下，合理确定系杆张拉力的大小和张拉时间成为施工控制的关键，在该桥控制过程中起着非常重要的作用。

Torsion pole spring tihmeter is a mini-tihmeter that is used to measure very small floor tilt and it can be widely applied to not only engineer construction in the fields of railroad, water and electricity, traffic, architecture and city planning etc, but also the background measurement of floor tilt in some scientific experiments.

扭杆弹簧倾斜仪是监测地面微小倾斜的小型化倾斜装置，可广泛应用于铁路、水电、交通、建筑、市政等领域的工程建筑中，也可应用于某些科学实验的地倾斜背景测量。

The capacitance gaps on both sides of mechanical oscillator in the torsion pole spring tiltmeter are difficult to be the wholly same because of the machining error, so the variation of ambience temperature and its grads will lead to the inconsistent variation of capacitances on both sides and the output of capacitance transducer circuit will also change.

由于加工误差的存在，扭杆弹簧倾斜仪中的机械振子的两边电容间隙很难完全一样，周围环境温度及其梯度波动会引起两边电容的变化不一致，电容传感电路的输出也会发生变化。

A numerical simulation, so-called block spring method, is used to study thelarge deformation of cavern's surrounding jointed rockmass with excavation and bolting.

根据节理岩体的特性，按弹簧块体理论模拟节理岩体中大型地下洞室开挖与锚杆支护的变形特征。

Exist manifold types breeding materials in test field, manifest abundant germplasm resource, obviously existent prematurity type and late-maturity type . It is very difference of phenological phase, plant height, laminae area, chlorophyl content, stern diameter, seed production ,colour and shape of inflorescence and spike, yield of grass et al.

试验地引种驯化的猫尾草中存在着多种类型的育种材料，表现出丰富的种质资源，明显的存在着早熟、晚熟两种类型，这2种类型的材料在物候期、株高、叶面积、叶绿素的含量、茎杆直径、结籽性，花序及穗的颜色与形状，产草量等方面存在很大的差别。

The structures of the straight core-pulling mechanism such as guide strip slide structure,guide rod sliding plate structure,guide strip structure and sleeve structure are introduced and their characterˉistics are stated.

介绍了导轨滑块机构、导杆滑板机构、导条机构、套筒机构等直抽芯机构的结构及特点，此类机构主要用于管件类模具中，应根据实际情况加以选

Through the study of this paper resolve the most complicated and troublesome problems encountered in the precision point synthesis and provide theoretical basis and technical method for dimensional scheme selection of the Stephenson six-bar linkages mechanism.

上述问题的解决为Stephenson六杆机构综合中尺度方案优选提供了理论依据和技术方法。

As a kind of fine adjusting devices, six-bar parallel mechanism is widely used to adjust mirrors' attitudes and keep stable in synchrotron radiation beamline. Parallel mechanism is a new adjusting device.

三者的核心部件即光学元件的稳定与调节均由精密调节平台完成，六杆并联机构以其独特的优点，在同步辐射光束线中得到了越来越多地应用。

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