查询词典 shower nozzle

Nozzle is one of the most important components used in SRM. The nozzle is subjected to the cautery and concussion of the heat gas, so the thermal effect and related thermal-structure couple effect to the nozzle structure become the important factor affecting the load carrying capability of the nozzle. Well, the following investigation contents are accomplished in this paper.

喷管是固体火箭发动机关键部件之一，喷管在工作过程中承受着高温燃气的烧蚀和冲刷，所产生的热效应和由此带来的热—结构耦合效应已经成为喷管强度和稳定工作必须考虑的重要因素。

A hotwire anemometer was used to measure the jet velocity at the exit of the precessing jet nozzle and the power spectrum density was obtained afterwards in order to analyze the precessing feature of the jet. It is shown that an obvious precession motion is generated in a nozzle even with a large expansion ratio E=10 and a small length-to-diameter ratio LD=2. The precessing frequency is mainly dependent on the nozzle diameter and the intake flow rate, increasing with the enhancement of the flow rate and with the reduction of nozzle diameter.

采用热线风速仪测量旋进喷嘴出口射流的速度，并对该射流进行功率谱分析以研究其旋进特性，结果表明，实验所用的膨胀比E=10、长径比L/D=2的喷嘴同样能产生明显的旋进射流，旋进频率主要取决于喷嘴的尺寸和射流的流速，并随流速的增大和喷嘴直径的减小而增大。

To realize this, dots for forming a test pattern are formed by different scannings by a nozzle group including a plurality of nozzles (N176~N192) positioned at one end side of a nozzle row and a nozzle group including a plurality of nozzles (N1~N16) positioned at the other end side of the nozzle row.

为此，在进行不同的记录扫描时，通过包含位于喷嘴列的一端侧的多个喷嘴(N176)～(N192)的喷嘴组，和包含位于喷嘴列的另一端侧的多个喷嘴(N1)～(N16)的喷嘴组，形成用于构成测试图案的点(61)、(62)。

The calculation and experiment results show that the maximum lifting pressure performance decreases with the increase in throat diameter of channel of variable section, water flux of low pressure and pressure ratio of steam nozzle, and has its minimum value with water nozzle annular space. The coefficient of maximum lifting pressure performance may be as high as 26. In the design of steam injector, the larger pressure ratio of steam nozzle and the smaller water nozzle annular space are selected, the higher lifting pressure performance could be obtained.

计算及研究表明：极限升压能力随变截面混合腔喉部直径、被升压的低压水流量和蒸汽喷嘴压比增加而降低，随环形水喷嘴间隙的变化出现了最小值；计算得出变截面超音速汽液两相流装置的极限升压能力可达26；在设计升压装置时应尽可能选取较大的蒸汽喷嘴压比和较小的环形水喷嘴间隙。

Comparison between the stress of swirling and common jet nozzle tells that the former maximum stress is far larger that the latter. It can explain that the wear of swirling jet nozzle is more severe than common jet nozzle. The way how various parameters effect the wear of the nozzle is carefully studied in the article.

对比了旋转磨料射流喷嘴和普通磨料射流喷嘴的应力情况，结果表明：前者的最大应力远大于后者，这可以很好地解释旋转磨料射流喷嘴比普通射流喷嘴磨损严重的现象。

To understand the different heat transfer characteristics of regenerative cooling in plug nozzle at different operating conditions, computational model of two dimensional plug nozzle and internal nozzle were established and numerical simulation was employed. Heat transfer results of the internal nozzle and the parameter distribution at the outlet were obtained. Flowfield and heat transfer characteristics of the plug at different operating conditions with different coolant flow rates were investigated.

为了解塞式喷管发动机高低空不同的再生冷却换热特性，分别对二维型面内喷管和塞锥建立计算模型，采用数值模拟的方法，得出内喷管的冷却换热结果和出口参数，重点研究了塞锥在地面和设计点工作时的不同换热特性及其冷却剂流量的影响。

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The observational result shows that this Quadrantid meteor shower occurs between 0000 to 0800 local time in January 4, 2004, with meteor echoes peaking at 0400 local time. Moreover the meteor shower radiant derived from the meteor echoes plane, which is formed by the whole meteor echoes observed by the meteor radar during this shower, accords well with the theoretic radiant of this meteor shower.

从观测结果可以发现此次象限仪座流星雨发生在2004年1月4日的0000-0800LT，其中流星峰值出现在0400LT，而且通过流星雷达观测到的流星雨期间的流星回波平面推测得到的流星雨辐射点也与该流星雨的理论辐射点位置对应非常好。

The company has been dedicated to the shower cabins, shower enclosure, shower panel, computer steam shower box, luxurious massage bathtub, and other relevant products.

该公司一直致力于淋浴舱，淋浴罩，淋浴小组，电脑蒸汽淋浴箱，豪华按摩浴缸，以及其他相关产品。

Shape selection of high-pressure direct atomize nozzle is carried, and then the nozzle's inner structure parameters' influence to its inner flow status and outlet atomization characteristics is simulated and tested. After such primary experiments, further modification of nozzle is taken.

细水雾来火技术具有无环境污染、灭火迅速高效、耗水量低、水渍损失极小、灭火效果良好等特点，是了连云港消防界在"蒙特利尔协议"签定后，规定在二十一世纪初叶要求取缔的对大气臭氧层有严重破坏作用的哈龙灭火系统的在效替代灭火系统。

Objective To study the effect of chitosan in the prevention of fibrous scar formation in the epidural space after laminectomy.

目的 观察选择性脊神经后根切除术椎板切除后硬膜外几种防瘢痕粘连物质的作用并探讨其机制。

On his way to the lift, he looked back to us or was it me his eyes pointing?

当他要进电梯时，他回头看我们（或者说是我，他的眼光？