查询词典 airflow

A subject was selected strictly from 30 healthy young people through nasal endoscopic examination, acoustic rhinometry measurement and CT scanning. Based on the CT image data of the subject, digital model of normal nasal cavity was reconstructed through Fluent 6.1.22 software. At the same time, according to the surgical requirements of FESS (remove the uncinate process and open the ethmoid sinus, maxillary sinus, and sphenoid sinus), post-FESS digital nasal cavity model was simulated. The viscous motion of nasal airflow before and after FESS was calculated by Navier-Stokes equations to compare the differences of airflow velocity, distribution, and pressure.

从30例健康青年人中，通过鼻内镜、鼻声反射测定仪及CT检查，严格筛选出一例研究对象，根据该入选对象的鼻腔CT影像资料，利用Fluent 6.1.22软件重建出正常鼻腔的数字模型，同时根据功能性鼻窦内镜手术的要求（切除钩突，开放筛窦、上颌窦和蝶窦）模拟出鼻内镜术后的鼻腔数字模型，再用Navier-Stokes方程对手术前后鼻腔气流的粘性运动进行数值计算，比较内镜手术前后鼻腔的气流速度、分布和压力的差异。

The research contents and main conclusions are as follows:1. The present thesis adopted one-dimension interior ballistic model, regarding the ballistic spatial core as the unsteady quasi one-dimension airflow containing the friction and heat exchange between airflow and tube wall, considering the boundary layer unsteady, nonstationary condensable current; and employed the MacCormack finite difference method to write the program.

本文的研究内容及结论主要体现在以下几个方面： 1、采用了一维内弹道模型，把弹后空间的核心流部分考虑为包含气流与身管管壁发生摩擦和热交换的不稳定准一维流，边界层考虑为不稳定、非定常可压缩流，用MacCormack有限差分方法求解，编制程序进行计算，较为准确的得到了复合材料身管固壁瞬态温度场分析内边界条件所需的气流温度和对流换热系数结果。

This machine use the dry and clean constringent air as energy、through airflow high-speed eject to make the grinder indoor be a grinding, classification round surface and be a pressure difference indoor then raw materials are automatically inhaled the indoor of grinder with the help of ultrasonic airflow what 4-16 spray head eject (producing the impacted energy E=1/2mv2), raw materials rotate at a high speed on the classification round surface and bring the litter store and make the raw materials granules hit and rub together to attain the supper fine materials.

本机组以干燥洁净的压缩空气为动力源，通过气流高速喷射，使粉碎室内形成一个粉碎、分级圆面，并在粉碎室内形成压力差，则物料自动吸入粉碎室，在4到16个喷头所喷出的超音速气流作用下（产生冲击能E=1/2mv2），物料在分级圆面上作高速通常在2-3马赫内，对于硬度低、脆性物料工作压力可低到0.6-0.7MPa。

Guangzhou subway No.3 lines some station was taken as research object , the infiltration and exfiltration pattern of airflow via opened Platform Screen Doors was simulated with CFD , besides, the airflow pattern in the front and the back of the train was analyzed respectively.

采用计算流体力学方法，以广州地铁3号线某车站为研究对象，对列车停靠站台，屏蔽门开启时，气流通过屏蔽门在车站站台和隧道间的渗漏模式进行数值模拟，并对列车前后端屏蔽门漏出风和渗入风模式进行了分析。

Exterior refinements include:+ A larger, polished stainless steel wire mesh front grille that enables the required additional airflow for engine heat dissipation + A new, lower front fascia that incorporates a larger lower grille for increased cooling capability; brake ducts for front caliper and rotor cooling and splitter to counteract lift created by larger grille openings + A new lower rear fascia that facilitates smooth airflow under the vehicle for improved cooling + Lower rockers that visually bridge the lowered front and rear fascias + A specific, fluidly sculpted hood designed to provide space for the engine's supercharger + Ten-spoke, flangeless, painted aluminum alloy wheels that assist in brake cooling + A higher, more rearward-positioned rear spoiler that enables balanced aerodynamic downforce with the front splitter + V-series badging on the vehicle's rear decklid and front doors, and "Supercharged" block lettering on the doors

外观的改进包括：+有较大，抛光不锈钢丝网的前格栅，使发动机所需的额外的散热气流+一个新的，较低的前仪表，它把一个较大的下格栅关于提高冷却能力；刹车管为卡钳和转子冷却和分配器足以抵消格栅的开口更大的提升+创建一个新的较低的后部汽车仪表板，便于在改善冷却车辆气流平稳+下摇滚乐的视觉弥补降低的前后面板+一个具体的，流畅，造型盖设计为发动机的增压器+十空间发言，凸缘，画铝合金轮毂的协助刹车冷却+阿更高，更向后定位的后扰流板，使平衡与前分路空气下压力+ V系列徽章的车的后部行李箱的大门，和&增压&块门上刻字

The flow field construct of meso-β cloud clusters which bring the heavy-hard rainfall in northeast plateau is that the low level cloud cluster is located in the south of converging region, the southern low level influx converged in the cloud cluster and have some affection on the setting up of the rainstorm in the low level. In the middle level, the cloud cluster is lied in near the westerly trough and the southwest airflow ahead of the trough constantly transmits water vapor to the cloud cluster. In the high level, there are a pair of high and low pressure centers around cloud clusters and are obvious divergence airflow, and there is weak ageostrophic high level outflux along pressure force.

产生高原东北部地区大到暴雨天气过程的中—β尺度云团的流场结构特征是：在低层，云团位于辐合区的南部，低层的偏南低空入流在云团内辐合，对大到暴雨的形成有一定的作用；在中层，云团位于西风带低槽附近，槽前的西南气流不断地给云团输送水汽；在高层，云团附近有一对高、低压中心，为明显的辐散气流，沿气压梯度力方向有强度不强的非地转高空出流。

Model QS-350 This machine is of horizontal disc type airflow crusher, and the whole crushing process is comprised of air compressor, air storage tank, air freezer and drier, model QS-350 airflow crusher, cyclone catcher and dust collector is ejected into the crushing chamber by means of high speed ejection flow formed by high pressure air through charging ejector, and the crushing nozzle outside ejects high speed air flow into the crushing chamber at a certain direction, making the material severely collided and frictionated therebetween and thus crushed.

QS-350型为水平圆盘式气流粉碎机，整个粉碎流程由空压机、储气罐、空气冷冻干燥机、QS350型气流粉碎机主机、旋风捕集袋及吸尘器等组成。该机是靠高压气体通过加料喷射器所形成的高速射流，使粉碎原料被射人粉碎室，粉碎室外围的粉碎喷嘴，有方向性的向粉碎室喷射高速气流，使物料间产生激烈的碰撞，摩擦而获得粉碎。

This article take 9309 coal mining face in some mine as an example, through the analysis mine heat source, uses the airflow temperature forecast model, had forecast the distribution of airflow temperature in coal mining face and two cross heading channels, and has carried on the contrast with the measured results.

本文以某矿9309工作面为例，通过分析矿井热源，利用工作面风温预测模型，预测了工作面和两顺槽的风温分布，并与实测结果进行了对比，结果表明热源分析结合风温预测能对工作面的热害程度进行准确预测，这对于矿井通风设计及局部降温设计具有重要意义。

Model QS-350 This machine is of horizontal disc type airflow crusher, and the whole crushing process is comprised of air compressor, air storage tank, air freezer and drier, model QS-350 airflow crusher, cyclone catcher and dust collector etc.

QS-350型为水平圆盘式气流粉碎机，整个粉碎流程由空压机、储气罐、空气冷冻干燥机、QS350型气流粉碎机主机、旋风捕集袋及吸尘器等组成。

The material enters from the feed pipe and is scattering in the rising airflow. Under the influence of gravity, the powder medium fragments fall by conquering the airflow resistance and is discharged from the discharging port.

物料由进料管进入，经分散板撒到上升的气流中，物料中的粉磨介质碎片在重力作用下，克服上升气流的阻力下落，由排渣口排出。

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％。