查询词典 jet-black

A self-preservation law of surface apophysis is found and a universal empirical formula is established. Finally, the jet and bubbly jet in flowing ambient are studyed by model and numerical test.

对流动环境中射流、掺气射流亦进行了类似于静止环境中的研究，不同的是给出了流动的转变条件和流速比对流动结构的影响。

In fact, the jet propulsion engine, whether rocket, athodyd, or turbo-jet, is a piece of apparatus designed to accelerate a stream of air or gas and to expel it at high velocity.

实际上，喷气推进发动机，无论火箭、冲压喷气、或者涡轮喷气，都是设计成加速空气流或者然气流并将其高速排出的一种装置。当然，如第2章中描述的那样，这样做有不同的方式。

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

通过Field II软件模拟了二尖瓣返流的各种情况，建立了相应的返流数学模型和返流评价标准。

The aerodynamic pressure expression at jet location and in the area of jet interaction is established by blast wave principium.

采用爆炸波原理建立了喷流区和喷流干扰区的气动压力计算模型。

The characteristics of the jet and bubbly jet have been investigated in this paper.

本文研究了浅水环境中射流及掺气射流的特性。

It had been proved that the bulkiness of the differential shrinkage filaments air-jet textured yarn could be controlled effectually by the different filament or multi-filament linear density,as well as the air-jet texturing and differential shrinkage parameters.

结果显示，异收缩空气变形纱的膨松度可以通过选择单、复丝的线密度、空气变形加工和异收缩变形加工工艺参数的方法加以有效控制。

They include the fundamental concepts of jet bundle geometry needed in describing time-dependent mechanical systems, decomposition of jet bundles into a direct sum according to the constraints, horizontal distributions on constraint mainifolds, the global formulation of D'Alembert-Lagrange's equations and Chaplygin's equations, and nonholonomic mechanics on a Riemann-Cartan manifold. Meanwhile, the geometric significance of Chetaev's conditions and $\rd$-$\delta$ commutation relation are discussed in depth.

本文主要综述非完整约束系统几何动力学的外附型和内禀型Lagrange理论，包括非定常力学系统所需要的射丛几何学的基本概念、射丛按约束的直和分解、约束流形上的水平分布、 D'Alembert-Lagrange方程与Chaplygin方程的整体描述、以及Riemann-Cartan流形上的非完整力学，文中对Chetaev条件和d-δ交换关系的几何意义作了深入讨论。

Established reliability solution calculation model of composite foundation improved by Dry Jet Mixing, looked for main failure mode of system, and analyzied correlation among every failure mode, calculated correlation coefficient among every failure mode, applied narrow bound method to calculate general failure probability of composite foundation improved by Dry Jet Mixing.

2建立粉喷桩复合地基系统可靠度求解的计算模型，找出系统的主要失效模式，并分析各个失效模式之间的相关性，求解各个失效模式之间的相关系数，并运用窄界限范围法求解粉喷桩复合地基系统的总失效概率。

The purpose of this paper is to find the proper character of cooling water and the ways of it pass in and out the jet, which make sure that the anode of plasma ignition jet will not be ruined, to prolong the useful life of the pole, by using the numerical analyze in plasma ignition torch against heat transfer of anode and cooling-water against convection current heat transfer, and process the simulation calculation by using FLUENT soft.

本文通过对等离子体点火炬与阳极传热以及冷却水与对流湍流传热的数值分析，运用FLUENT软件进行模拟计算，找出满足使等离子点火器阳极不被烧蚀的冷却水的合理参数及冷却水进出水方式，来延长电极的使用寿命。

The technique of abrasive jet cutting in oil well are developed to be used in increasing oil production by abrasive two-phase jet theory.

磨料射流油井割缝增产技术是利用磨料两相射流机理开发出来的用于油田提高油井采收率的一项技术。

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％。