Effects of demihull spacings on specific resistance are represented in Fig.2.

单间距对比的影响如图2所示.

The aircraft is streamlined to cut down wind resistance.

飞机设计成流线型以减小风的。

The wave drag increases with increasing upsweep angles and decreases with increasing flatness of the aftbody.

角增大，后激波增加；后越扁平，后激波略有减小。

For example, the Capacity of Jet Fanin tunnel,the flux distribution and resistance loss in the chimney.

重点研究了射流风机在隧道内的的调压性能，竖井三通的气流分布以及局部损失。

This is because in this case, the self-crimping triangulateration of resistance than down much of the resistance.

这是因为在此栽境况下，笔直的比边角起的不小得众。

Curve and uphill path resistance are great, linear resistance is little, declivous path still has quicken force.

曲线及坡道大,直线小,下坡道还有加速。

A simplified model based on drag concepts is developed to evaluate the roughness coefficient for unsubmerged vegetation.

并基于的概念，建立了一个简化的模型来估计菖蒲的曼宁糙率系数。

The new muffler device has simple structure,it has lesser effect on the resistance loss of chief ventil...

该消声装置结构简单,对主要通风机的损失影响小,防尘、防潮及降噪效果明显,可广泛的应用于煤矿主要通风机的消声降噪。

Conclusions: Fluid displacement from the legs by LBPP increases neck circumference and Rph in healthy subjects.

下正压引起的移可增加健康受试者的颈周径和咽部。

Results Color Doppler echocardiography showed that the embryocardia ductus arterious flow had a bright shunt from the pulmonary to descending aorta.

24%的胎心存在生理性三尖瓣返流,肺动脉普遍较高,胎心动脉导管血流单向自肺动脉流向降主动脉,显色明亮。

The shape and perigee of artificial satellite orbits shall continually variate due to caused by the atmospherical drag and the earth gravity.

人造地球卫星的轨道由于大气和地球引场等因素的摄动,其形状和近地点位置将不断改变。

Objecties: To determine whether displacement of fluid from the lower body to the neck will increase both neck circumference and Rph in healthy subjects.

测定从下移到颈部是否增加健康受试者的颈周径和咽部。

The blood volume of microcirculation is in direct proportion to the dp of arteriole and veinule,and in inverse proportion to the whole resistance of microcirculation.

微循环的血流量与微动脉和微静脉之间的血压差成正比,与微循环中血流总成反比.

Widely used in air purification for hospital mortuary, zootomy room, police corpse inspection room etc. Low sorption pressure with high speed, complete and fast sorption relief.

广泛应用在各大医院的太平间，动物解剖室，各公安机关尸检室的空气净化。吸附小，速度快，解吸迅速，彻底。

Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.

目的本研究采用彩色多普勒检测孕妇子宫胎盘床螺旋动脉搏动指数（PI），指数（RI），预测妊高征的发生、发展及预后。

An investigation on dusted airflow distribution in gas chamber of multicyclone has been carried out by using the principle that the resistance of dusted airflow in it would keep equilibrium.

通过对多管旋风除尘器内气流平衡分析,探讨多管旋风除尘器中各旋风子单的气流分配状况,建立了气流分布计算模型,结合算例进行了分析。