夹紧

This paper introduces a new type rotatable hydroclamp to disassemble hydraulic prop and its structure,working principle,test,application.

介绍一种用于单体液压支柱拆卸的新型液压夹紧装置及其结构，分析了工作过程，工作原理，试验、应用情况，指出了这种装置的优越性。

The structure and usage of clamping device of scalper for aluminum stock are introduced in the paper.

介绍了铝板锭铣床夹紧装置的结构和用途，找出了存在的问题，提出了完善的方案。

Inputs and outputs are designed as terminal for easy mounting and they could be fixed via normal screw driver.

为了方便安装，输入输出采用可移动的螺丝夹紧端子，该端子可用普通的螺丝刀来紧固。

AAA Bearing LTD offers Offers to Tapered roller bearings, thrust ball bearing and Self-aligning bearing.

公司提供大量的摆动轴承、自动调心轴承和夹紧套筒。

When spring break accident, the rail side of the clamping device can effectively prevent the door down.

当弹簧意外断裂时，此装置能通过夹紧侧轨，有效防止门坠落。

The engine bed also is equipped with the interconnection,the tool rest auto-feed and the rapid traverse interconnection,the lathe bed both sides skip distance cushion which the hydraulic ressure clamp system,the abnormal cutting traveling schedule stops immediately and so on each kind of safety device,guarantees the operator and the engine bed movement safety.

机床还设有液压夹紧系统，失常切削行程立即停止的联锁、刀架的自动进给与快速移动的联锁、床身两端的越程缓冲等各种安全保护装置，以保证操作者和机床运行的安全。

4Hydraulic pressure equipment design slipway and locating and fixing device are all controlled by hydraulic pressure .

液压装置的设计液压滑台、定位夹紧装置均为液压控制。

Type II:Made of high-quality steel or stainless steel by mechanical cable- clamped device.

II型：采用优质钢或不锈钢制作，采用机械式电缆夹紧装置。

The results show that the device can avoid the influence of bad straightness of the pipe and advance the machining quality.

研究结果表明，此夹紧装置能够避免钢管不直度的影响，提高钢管加工的质量。

Thereby,the stress and the strain distribution diagram of the clamping mechanism and the maximum axial load of the material are obtained.By means of the analysis,the driving pressure of the actuating device is confirmed and the right choice of the material is verified.

分析计算结果表明，当钻杆液压夹紧机构的钳体材料选择ZG310-570，所用液压马达的排量为390 mL/r时，该系统在最小驱动压力4.82 MPa、最大驱动压力7.30 MPa时才能正常工作。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。