查询词典 flow resistance

Considering the electrovalence, the curve of water consumption and the reliability of water supply, this paper respectively sets up the model based on the maximal flux and the model based on the expectation flux. It takes yearly expenditure converting value and yearly cistern converting value as target function and takes continuity equation, velocity of flow and compression resistance of cast iron pipeline as restrictions and sets up the PGA model on optimal design of water supply networks.

考虑到峰谷电价、用水量变化曲线及用水可靠性因素的影响，分别建立了以最高时流量设计管网的模型和以期望时流量设计管网的模型，以年费用折算值加上清水池年造价折算值为目标函数，以连续性方程、管中流速和铸铁管耐压值等为约束条件，进行并行遗传算法对给水管网优化设计的实现。

Portal hypertensive enteropathy,whose fundamental pathologic change is a vasculopathy characterized histopathologically by mucosal and submucosal vessel dilatation,oedema and congestion,mainly results from a combination of increased intrahepatic vascular resistance and increased blood flow through the portal venous system.

肝硬化门静脉高压性肠病(portal hypertensive enteropathy，PHE)的2大主要发病机制是肝内门脉血流阻力增加和流经门脉血流增多。PHE的基本特征是组织病理学上的特征性血管病变。临床表现无特异性，但却是下消化道出血的主要原因。

The equilibrium condition of alluvial rivers is determined by flow continuity, resistance and sediment transport relations.

冲积河流的水流连续性、阻力和泥沙运动方程决定着天然河流的输水输沙平衡条件。

The mastoid excrescence with low velocity of flow and low resistance could be found on the surface of the ovary.

卵巢形态不规则，血流呈高速低阻型，周围有肠管粘连。

Isoflavone can increase cooperativity of adenosine, reduce blood vessel resistance, increase blood flow; and restrain blood platelet agglutination, decrease cell factor, active endogenesis fibrinolysin decrease Catecholamine chroma to improve cochlea microcirculation.

异黄酮可协同腺苷的作用，降低血管阻力，增加血流量；同时也能有效抗血小板聚集，抑制其细胞因子释放，促进内在纤溶酶活性，亦降低血浆儿茶酚胺浓度作用，进一步改善耳蜗微循环。

Basod on the field hydrologic and sediment data, the river resistance,scouring and silting behavior,flow\|sediment and tidal movment law in the estuary reach of floodway of the Ziya River has been comprehensively analyzed.

利用实测水文、泥沙资料，对子牙新河尾闾段的河道阻力、冲淤特性、河口水沙及潮汐运动规律进行了全面分析。

De Kroz also has to execellent yellowing resistance, very good wetting and flow properties, low foaming, and is low in cost, making it an ideal choice for any formulator.

dekroz也execellent泛黄的阻力，很好润湿和流特性，低发泡并且成本低，使它成为一个理想的选择，任何formulator。

In addition, the impact of the size of the calculated value of the resistance water pipe head loss, therefore, should adopt the arrangement of the shortest line, and as little as possible, such as elbow fittings installed, it may consider appropriate with larger diameter water pipes to reduce the flow tube.

另外，影响计算值的大小是吸水管道的阻力损失扬程，因此，宜采用最短的管路布置，并尽量少装弯头等配件，也可考虑适当配大一些口径的水管，以减管内流速。

An insulator is a poor conductor because it has a high resistance to such flow.

绝缘体是不良导体，因为它是对电流的通过呈高电阻的物质。

During chemotherapy both systolic maximum and diastolic minimum blood flow velocity and resistance index in renal segmental artery and interlobular artery were meaured by color doppler weekly.

于化疗中每周应用彩色多普勒超声仪监测患者肾脏血流，测定肾脏中心区域的区域动脉、叶间动脉的血流速度波形，求得收缩期最高血流速度，扩张期最低血流速度及阻力指数。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐