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"Hydraulic safety valve" is now widely used in hydraulic power systems and hydraulic equipment in the safety device could also serve as limited pressure device, is a special valve, unlike conventional valves, conventional valves with mechanical metal spring as a driving force, can only be limited to low pressure, the pressure encountered over more than 10Mpa limit pressure can do to increase the volume of the Safety Overflow Valve booster design, the traditional role of the high-pressure valves and high pressure hydraulic power systems and hydraulic equipment The limit pressure of necessity is bulky and complicated structure, difficult to manufacture large, high production costs; in the course of the fatigue of metal spring parameters change fluctuating pressure limiting Ambassador to regular revision to ensure the normal use.

&气动液压安全阀&是目前广泛应用于液压动力系统和液压设备中的安全装置，也可以作限压装置，是一种特殊的阀门，它不同于传统的阀门，传统阀门用机械金属弹簧为动力，只能限中低压力，遇到超过10Mpa以上的压力限压，只能做加大体积的增压设计，因此传统阀门作用于高压和超高压的液压动力系统和液压设备的限压时必然体积笨重，结构复杂，制造难度大，产品成本高；在使用过程中金属弹簧的疲劳变化大使限压参数波动大，要经常调整才能保证正常使用。

Aiming at the problem that the seeds picked up by the suction plate of the seed metering device cannot accurately fall into the seed pit opener as well as into the seed pit, an innovated seed metering device on which the seed dropping angle can be adjusted within a certain range and a new testing stand have been developed in accordance with the mathematical calculation model that had 'in accordance with the mathematical calculation model that had been established previously.

本论文根据2BQM-2型气吸式精量铺膜播种机的结构和工作原理，针对该机在实际播种中，吸种盘吸出的种子不能满足准确地落入在膜上滚动开穴的鸭嘴内，并及时地排入到鸭嘴所成的穴孔内的设计要求，进行了一定的试验研究，利用已建立的计算数学模型，设计新的试验台，改进排种器，使排种器的落种角度可以在一定的范围内调整。

Energy requirement for drying could be reduced by a dryer with a heat recovery device. In order to analyze the optimum operation conditions, the effect of fan speed on the temperature, airflow distribution and effectiveness of the heat recovery device was investigated in the drying system. The optimum fan speed would be at maximum speed during initial heating stage and at lower speed during steady stage in order to improve the performance.

具有热能回收装置的乾燥系统能降低乾燥所需的能量，为了分析此乾燥系统的最佳操作条件，测试其风扇转速对於乾燥室内温度、风速和热能回收装置效能的影响，归纳出风扇最佳运作应是在加热启动阶段应用最快转速，到达稳定阶段后，以较低转速可提升乾燥机的性能。

The defects of the commonly used trigger devices with pneumatic valves in control precision of birdshots are analyzed. As a result, a new type trigger device, i. e. the trigger device with impact slide valve gear, is developed so as to avoid these defects.

理论分析了目前常见的气动阀开炮机构在鸟弹控制精度方面的缺陷，并针对其缺陷设计了一种新的开炮机构：冲击式滑阀开炮机构。

This belt conveyer hydraulic pressure stretching device's design is in the absorption country, the inside and outside conveyers tighten in the technical foundation, according to domestic belt conveyer's movement characteristic and request development one kind of new hydraulic pressure stretching device.

本带式输送机液压张紧装置的设计是在吸收国、内外输送机张紧技术的基础上，根据国内带式输送机的运行特点及要求研制的一种新型液压张紧装置。

Each time when the wireless mobile device moves from a position to another position, the processing device is connected to a plurality of external devices via reference access codes and the location indicators, but not all scans the coverable external devices each time.

每当无线移动装置从一个位置移到至另一位置时，处理装置通过参考存取码与位置指示器来联机至多个外部装置，而非每次都扫描可覆盖的外部装置。

As 8 million tons / year the building of constant decompression device put into production, 3.3 million tons / year plant of an a batch of derv hydrogenation device construction that build a project, ethylene transforms survey of spot of project project make one's bow easily to evaluate, company and refine changed a ministry to welcome a rare development opportunity again.

梗概： 2005年，随着800万吨/年常减压装置的建成投产、330万吨/年柴油加氢装置等一批新建项目的建设、1号乙烯装置易地改造工程项目正式进入现场调研评估，公司和炼化部又迎来了一个难得的发展机遇。

The NLAS4599 selects the digital or analog detector output, presenting very low impedance to the driver amplifier for the selected device and very high impedance to the deselected device.

在NLAS4599选择数字或模拟探测器输出，呈现非常低的阻抗为选定的设备和非常高的阻抗取消选定设备的驱动放大器。

Device type: structure of the device is also an Etchant characteristics of one of the factors.

摆撤的典范榜样：摆撤的布局步地也是不不对蚀刻液共性的感化次给身分之一。

The embeddes system examinates the condition, displays the information and diagnoses the fault of the locomotive device while the expert system deals with the locomotive device state information and estimates the locomotive operation state by receiving vehicle embedded system.

其中嵌入式系统完成对机车设备状态的检测、信息显示和简单的实时故障诊断功能，专家系统通过接收车载嵌入式系统对机车设备状态信息的初步分析处理，完成机车运行状态判断和状态预测。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。