小阀

Loss of head is minimized by the balanced disc and its "aerofoil" design.

通过平衡阀瓣及其"翼型"结构，将水头损失降到最小程度。

The main content of the task is to put up the 2nd development of LabVIEW,enlarge the analytic function of wavelet, make use of it in the ex

本课题旨在对LabVIEW进行二次开发，拓展其小波分析功能，将其应用于对电液比例方向阀静、动态综合特性的测试结果的消噪处理。

We firstly bring forward and realize technologies of arbitrarily shaping laser pulse in the time domain by chirped pulse stacking, programmablely shaping spatial intensity by crystal liquid diaphragm, focused spot smoothing using angular spectrum dispersion by special gratings and detecting and compensating the small patch wave front aberration. Precise, programmable, efficient and \'all parameters\' condition of high power laser system has been obtained.

首次提出并实现了啁啾脉冲堆积型的时间波形任意整形；液晶光阀可编程光强空间整形；特殊光栅光谱角色散焦斑束平滑和小尺度波前畸变的探测和补偿，从而对高功率激光系统的激光束实现了高精度、可编程、有效的"全息"控制。

This ground-source heat pump equipment, the use of the world's top German Bitzer compressor, evaporator liquid filled, imported electronic expansion valve, color touch-screen computer, a dedicated controller such as central air-conditioning ten patents, stable operation and reliable performance long service life, simple operation, an area of small, could be located in the basement.

这套地源热泵设备，采用世界顶级德国比泽尔压缩机、满液式蒸发器、进口电子膨胀阀、彩色电脑触摸屏、专用中央空调控制器等十多项专利技术，运行稳定、性能可靠、使用寿命长，操作简单，占地较小，可以设在地下室。

We fould that most reconstruction algorithm based on wavelets did not consider about the noise. And so, we proposed the denoised reconstruction algorithm based on seperable MRA, in which added regularizion denoised method based on wavelets.

发现大多数小波重建算法都没有对图像的噪声进行处理，基于此，提出了对基于可分离MRA的小波去噪重建算法，融入了基于小波的阀值化去噪算法。

When the flow through the balance of the piston damping the flow of holes increases, the balance of the piston, the next increase in pressure on both sides of a balanced increase in the distance the piston increases, and vice versa reduced; and also because the spring stiffness is very small, so that shift the balance of the piston pressure required very few changes, so the flow through the Poppet head is not much change, so the first opening Poppet very few changes, to mention the pressure of moving the first opening can be said to remain unchanged, that is, when the pilot valve spring after a set, Poppet Head was opened, the balance piston chamber pressure remained basically unchanged.

当流经平衡活塞上阻尼孔的流量增加时，平衡活塞上、下两侧的压差增加，平衡活塞上升距离增加，反之则减小；又因为弹簧的刚度很小，使平衡活塞上移所需压差变化很小，所以通过提动头的流量变化也不大，因此提动头的开口变化很小，提动头开启的压力可以说是不变的，亦即当先导阀的弹簧一经设定后，提动头被打开时的平衡活塞上腔的压力基本保持不变。

Boiler feed pump minimum flow valve cycle Control requirements: the boiler feed pump safe start-up and running, eliminate traffic is too small, temperature increase, the water a strong cavitation damage to the pump.

锅炉给水泵最小流量循环阀控制要求：使锅炉给水泵安全启动及运行，消除因流量过小、温升增加、水强烈气蚀使泵损坏。

To this end, stem design very small, another commonly used filler of PTFE packing friction coefficient REDUCING VALVES in order to reduce backlash, but this problem is to send small stem, is easily bent, packing too short life.

为此，阀杆设计得非常细小，填料又常用摩擦系数小的四氟填料，以便减少回差，但由此派出的问题是阀杆细，则易弯，填料寿命也短。

To this end, stem design Multi-stage pumps very small, another commonly used filler of PTFE packing friction coefficient in order to reduce backlash, but this problem is to send small stem, is easily bent, packing too short life.

为此，阀杆设计得非常细小，填料又常用摩擦系数小的四氟填料，以便减少回差，但由此派出的问题是阀杆细，则易弯，填料寿命也短。

Then the influence of flow, pipe length, setting pressure of relief valve and stiffness coefficient of main valve spring on the water hammer peak pressure at the instant of fuel pistol closing was studied according to the detected pressure signals. Finally, the relatively accurate gas-liquid separation value and critical cavitation pressure value of the system was obtained by frequency analysis and wavelet analysis.

根据测得的压力信号，对燃料枪关闭瞬间流量、管长、溢流阀调定压力以及主阀弹簧刚度对水击效应引起的峰值压力的影响进行研究，并通过频率分析方法和小波分析方法较精确地获得系统的气液分离值和临界汽蚀压力点。

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。