大型双旋喷头是大型炼油装置工艺设备的重要组成部分。
The large scale double spin nozzle is the major component part of process equipment in large scale refined unit.
在它的中央你可以看到一座据说是达芬奇设计的双旋楼梯。
At its center you will find a double spiral staircase that was said to be designed by Leonardo da Vinci.
如果你曾经喜欢打空中曲棍球，你会爱上双旋球更是其进化的动力。
If you have ever enjoyed playing Air Hockey, you will love Dual Spin Ball even more for its evolutionary power.
某型共轴双旋翼直升机计算实例表明，所得结果与该型直升机飞行特性一致。
Calculation example given indicates that the equations of dynamic response proposed for vertical movement and direction rotation reflect flight characteristics of this helicopter.
对两种不同的燃烧室头部（三旋流杯头部为A型、双旋流杯头部为B型）进行了研究。
Two kinds of combustor domes were investigated, of which one was that with three swirlers (A model), and the other with two swirlers (B model).
通过数值求解带有动量源项的三维不可压缩N-S方程，模拟了共轴式双旋翼的流动。
The 3 D incompressible N S equations with momentum source terms are solved to simulate the flow fields of coaxial rotor configurations.
研究表明：由于进料螺旋输送器的作用，在一定的导流叶片角条件下存在着双旋流流场。
It is shown that the existence of central screw conveyer produces the contrary swirl flow under some of the swirl vane Angle condition.
试验研究了主、径向涡流器旋流数、面积比、套筒扩张角等参数对双旋流进气装置冷态流场的影响。
The effects of swirl number of primary swirler and radial swirler, area ratio and sleeve divergence angle on the cold flow field of double swirl air intake were investigated.
分析了粉尘产生和扩散的原因，根据选煤厂的实际采用密闭抑尘与双旋喷雾除尘相结合工艺治理粉尘污染。
This paper analyses the reasons of the emergence and spread of dust, According to the actual situation of coal preparation plant, use dual-swirl spray control dust pollution.
利用IFA300型二维恒温热线风速仪系统对双旋流气体燃烧器模型的冷态流场进行了实验研究，测量了流场内不同位置瞬时速度分布及湍流强度特性。
An experimental study was conducted of the cold-state flow field of a dual swirl gas burner model through the use of an IFA300 type two-dimensional constant-temperature hot-wire anemometer system.
陕西Y-8双涡轮旋浆飞机，安托诺夫An-12反工程版，成为预警机平台，电子情报和仪器飞航规则飞机。
The Shaanxi Y-8 twin-turboprop, reverse-engineered from the Antonov An-12, is the platform for the development of airborne early warning, electronic intelligence and instrument flight rules aircraft.
基于光的偏振特性、马吕斯定理和法拉第旋光效应，采用同光源双光路检测，实现了大量程直线位移的测量。
Based on characteristics of optical polarizing, Malus law, and Faraday optical rotation, a long-range displacement detector is realized by same light source and double light route.
两能级原子与外部环境(热库)相互作用时，采用非旋波近似，研究原子与热辐射场单光子和双光子作用过程。
The interaction of a two-level atom with a thermal radiation field for single-photon processes and two-photon processes without rotating wave approximation is analysed.
本文采取旋波近似，分析了序列脉冲激光作用下的双能级系统。
Two-level systems under the action of a laser pulse train are studied by rotating-wave approximation.
利用冷态等温模化技术对浓淡型双调风旋流燃烧器进行了模拟实验研究。
An experimental study is conducted of a dense dilute dual channel swirl burner with the help of cold state isothermal simulation technology.
所以在应用双传声器声强测量法测量声功率时将受到有旋性的影响。
The measurement of sound power by use o the two-microphone technique will be affected by the rotation of the active intensity.
本文主要介绍双桨浅吃水肥大船尾型、伴流场与螺旋桨旋向配合研究的主要结果。
This paper describes primarily the results of the research on the combination of stern shape, wake field and propeller rotation direction for a shallow draft full ship model.
根据旋流理论提出了一种新型的用于吸收式制冷循环的双室涡旋发生器。
In this paper, according to the vortex flow theory, a new dual chamber vortex generator model is suggested to improve the COP of the absorption refrigeration system.
目的：为切取旋股外侧动脉升支含双营养支的髂骨瓣提供解剖学依据。
Objective: to provide anatomic basis for the dissection of iliac flap pedicled with two nutritive branches of ascending branch of lateral circumflex femoral artery.
建立了一种新的制备手性2-辛醇的方法——双菌氧化还原耦联转化外消旋2-辛醇制备（R）-2-辛醇。
To develop a practical process for(R)-2-octanol production from racemic 2-octanol, a two step microbial reaction was investigated.
采用常微分方程理论研究了无旋波近似下双光子J-C模型系统的时间演化。
The time evolution of system in two photon Jaynes Cummings (J C) model without rotating waves approximation (RWA) is obtained by using the theory of ordinary differential equations.
研究了在非旋波耦合条件下微波场建立的原子相干对光学双稳与多稳的控制。
We show the control of optical bistability and multistability via the atomic coherence induced by the microwave field in the presence of the antirotating wave coupling.
该新型旋流管具有双进口、弧锥体的结构特征。
The swirl tube was characterized by double inlets and arc cone.
该新型旋流管具有双进口、孤锥体的结构特征。
The swirl tube was characterized by double inlets and are cone.
第八名：贝尔uh - 1IROQUOIS(惠)是一种军用直升机搭载单涡轮轴发动机，具有双桨叶主旋翼和尾桨。
Number 8. BELL UH-1 IROQUOIS (HUEY) is a military helicopter powered by a single turboshaft engine, with a two-bladed main rotor and tail rotor.
单、双级旋片式真空泵。
单、双级旋片式真空泵。
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