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Average atmospheric pressure, degradation of visibility, daily temperature difference and water-vapour pressure were closely associated with the prevalence of tracheobronchitis. AID can be used to established early-alarming and prediction model.

结论]平均气压、能见度、日较差和水汽压等气象因子与气管支气管炎门诊人数密切相关,可利用AID建立模型,开展预测预报,提醒市民注意防范。

The main products include high grade nylon hose,PU,PE hose,pressure hose,wire hose,hose for washing machine,watermill and it's accessories.The products are excellent in quality,complete in specifications and reasonable in price.

主要产品有优质工业配管、溶剂专用胶管、PU夹纱管、气压专用管、钢丝吸入管、钢丝编织液压胶管,园林用水车及配件,产品质量优异,规格齐全,价格合理。

Using the ground and vehicular test systems,many parameters such as pressure change, wind caused by train ,micro-pressure wave and vibration acceleration of the wall of tunnel were tested.

利用地面和车载测试系统,对列车车体表面、车厢内部、隧道壁面空气压力变化、隧道内列车风、隧道口微气压波和隧道壁面振动加速度等参数进行测试。

A line on a weather map connecting points of equal atmospheric pressure.

联结在某一时刻气压相同的各点的联线。

It's necessary regulate the pressure between input and output of the valve, it can reduce the pressure on the front axle, and prevent form front whee lock during partial applications of brake, there by improving braking - performance.

用来调节输入和输出压力的比值使在较低的制动减速度时,减少前轴的制动气压,避免前轮制动时抱死,从而改善整车的制动性能,同时也起快放阀的作用。

In addition, the computational evaluations indicate that the heat transfer enhancement of delta winglet for aligned tube bank heat exchanger is more significant than that for staggered tube bank heat exchanger, the heat transfer enhancement of delta winglet with the attack angle of 45° is more obvious than that of 30°; the delta winglet with the attack angle of 45° leads to an increase in pressure drop, while the delta winglet with the attack angle of 30° results in a slight decrease.

另外计算还发现:三角形小翼对顺排换热器的强化换热效果好于对叉排换热器的强化;冲角为45°的三角形小翼强化换热效果好于冲角为30°的三角形小翼;冲角为45°的三角形小翼导致空气压降提高,而冲角为30°的三角形小翼则可使压降有所减小。

Keeping a certain oxygen pressure in the deposition chamber to convert the partially oxidized yttria into perfect oxidized yttria, the absorption coefficient of the films would be decreased.

本文通过在镀膜过程中向真空室中充入一定气压的氧,保证不完全氧化物再度合成为完全氧化物,从而降低了Y〓O〓薄膜的光学吸收系数。

A new index is developed for land-sea thermal difference zonally/meridionally in terms of east Asian zonal sea-level pressure difference combined with high and low-level zonal wind shear at low latitudes.

将东亚纬向海平面气压差与低纬度高低层纬向风切变结合,定义了一个能表征东西和南北向海陆热力差异的东亚季风指数。

Constant voltage and current, antioxidize case:Insure flux quality accordantly in condition of instable power and air pressure;Soldering paste density without change after long time work.

恒压恒流,防氧化箱:在电源气压不稳定的情况下确保喷雾量一致;助焊剂在长时间的使用保持浓度无变化。

Selection of monitoring spotsWith the consideration of energy structure in Shenyang, weather conditions , pollution levels of major atmospheric pollutants, the health effects of air pollution, and the acquirability of historical records on the air pollution, 1991 -2001 environmental quality monitoring data of Shenyang were acquired and analysed.

颗粒物样品的采集与测定(1)大气污染粉尘采样:在每个监测点设置AN-200自动空气采样器,分夏季和冬季各采样一次,每次采样时间一周,每天24小时连续采样,同时记录气温、气压和相对湿度。

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这一模式非常关注商人的网络信用基础。

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