查询词典 jet

If the dust cleaning efficiency is known, the geometric parameters of the cleaning system, pulse-jet pressure, time and filtration area of a plenum box (or the diameter, length and numbers of the fiber) will be determined in the pulse-jet baghouse.

若预先确定要求达到的粉尘剥离率，可以通过清灰气流速度方程和剥离力方程确定脉冲清灰系统的几何参数、脉冲喷吹压力、脉冲喷吹时间和分室内的过滤面积（或滤袋直径、滤袋长度和滤袋数量等）。

With the collapse model of chous and the modified PER theory, one dimension calculation was obtained to describe the process such as liner collapse, jet formation, jet stretch and penetration of different explosive filled structure by Matlab tool and good result was attained.

采用周培基的压垮模型和改进的PER理论，针对不同装药结构的药型罩借助Matlab语言实现了药型罩压垮、射流形成、射流拉伸、侵彻等过程的一维数值计算，获得了较好的计算结果。

It is considered that the analogy of the jet shape is a guarantee of validly simulating interference forces due to the interaction between the jet and the crossflow.

分析了在直接模拟中同时模拟喷流形状和喷流力的相容情况，并给出了相应的相容条件。

Experimental study is practiced to examine AWJ cutting quality.By changing waterjet pressure and cutting speed,cutting kerf surface quality is studied.By the analysis of AWJ cutting mechanism and cutting process,the thesis explores the specific shape of the cutting section and its mechanism,and believes that the asymmetric distribution of abrasive jet's kinetic energy and jet's deflexion causing the formation of striations,waviness and cuspidate end.However,high-efficient cutting of AWJ could be achieved by...

对磨料水射流的切割质量进行了试验研究，通过改变水射流压力、切割进给速度来研究切割断面质量，对AWJ切割机理和切割过程进行了分析，探讨了AWJ切割断面的形貌特征及其形成机理，认为是射流断面磨料动能的分布不均和射流的偏转滞后造成了AWJ切割断面斜条纹和曲线及尖角处的尖端，提出了两种提高磨料水射流切割质量的方法。

He was instrumentally involved in thedevelopment of the Daniel and Florence Guggenheim Jet Propulsion Center,Caltech's academic focus of instruction and research in jet propulsion.

他参与了加州理工学院喷气推进教学和研究的学术重点-&丹尼尔和佛罗伦萨·古根海姆喷气推进中心&的工作。

Micrographical digital business card printing and membership card making ink is commonly used for ink-jet business card printing and membership card making and printing ink types and ink-jet header structure.

液态数字制卡和会员卡制作油墨常用于喷墨制卡和会员卡制作，油墨种类与喷墨头结构有关。

Cold flow field in the precombustion chamber applying nonsymmetrical jets was investigated by numerical means. Conditions favorable for CWS ignition and combustion were analyzed. Optimal geometry and operation conditions of precombustor were presented for multistage nozzle jet and internal-mixing nozzle jet, respectively.

对本实验室发展的水煤浆偏置射流预燃室进行了用水煤浆燃料时两相冷态流场的数值模拟，探讨了适合于水煤浆点火和稳燃的条件，并通过大量的计算，分别初步优选出适合于多级气动喷嘴雾炬以及ZN型喷嘴雾炬的较好预燃室结构和操作工况。

A computer-aided local transient flow property measuring system was developed using a high speed CCD camera coupled with optical fibers in order to study the Gas-liquid-solid three-phase jet loop reactors. SnO2 crystal films were orientally deposited on the alkoxysilane molecule-coated hydroxyl glass substrates so as to prepare surface-marked particles as the tracers. An image analysis system was established to identify different phases. Stroboscopic photography was utilized to extend the measure range. The developed measuring and analysis system was capable of determining accurately the local transient flow property in a G-L-S jet loop reactor. Based on the above system, local transient flow properties of gas, liquid, and solid phase were measured and studied the influences of fluid property, operation and configuration parameters on the reactor.

中文摘要：以气液固三相喷射环流反应器为研究对象，将高速CCD和光纤束耦合制成局部瞬态流动特性微机数据采集及图象处理系统，利用MPS硅烷分子在带有羟基的玻璃基底上的自组装引导SnO2晶态膜层在功能化表面上进行沉积，以获得表面标记的示踪粒子，解决图象处理技术与相的识别的问题，利用频闪技术拓展了测量上限，得到可以准确测定气液固三相喷射环流反应器中局部瞬态流动特性的测试系统；采用上述测试技术进行喷射环流反应器中局部气相、液相与固相瞬态流动特性的实验研究，并考察物性参数、操作参数与结构参数的影响规律。

Methods Based on the model of round axial symmetry turbulent jet, three simplified categories of the mitral regurgitant jet were proposed.

方法据圆形轴对称自由紊动射流模型，利用超声成像模拟软件FieldⅡ模拟简化的二尖瓣反流的三种情况：①完全正向射流；②中心为正向射流，边缘为负向反流；③上半部分为正向射流，下半部分为负向反流。

By simulating calculation with a new velocity distribution formula of free jet flow and a scour rate one, the resuspension of contaminated bottom sediment on the disturbing of boat propeller jet flow was studied.

河流、湖泊中船舶的航行对于水体底部的污染沉积物具有很强的扰动作用，特别是船舶尾部的螺旋桨射流。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。