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1)  Manufacture deviation for the emitter
滴头制造流量偏差
2)  manufacture flow deviation rate
制造流量偏差率
1.
With the production development and technology progress, in order to improve the design accuracy, it is necessary to take into consideration the effects of manufacture flow deviation rate and elevation flow deviation rate on the total flow deviation.
该文在已有高差流量偏差率的基础上,定义了滴头的制造流量偏差率、导出了3个流量偏差率最不利组合——流量总偏差率计算式,并提出了流量总偏差率允许值的建议。
3)  drip discharge
滴头流量
1.
The experiment was conducted to investigate the effect of different drip discharge,irrigation water quantity and two kinds of soil profile bulk density on transport of the soil water with drip irrigation.
研究了大田滴灌条件下,不同灌水量、不同滴头流量以及不同的土壤剖面容重条件下水分在土壤中的迁移规律。
2.
The soil wetting pattern,which has influence on crop root development and crop yield under drip irrigation,is mainly affecfed by the drip discharge.
滴头流量的变化对湿润体的大小和形状影响很大 ,进而影响作物根系生长和产量。
4)  dripper discharge
滴头流量
1.
Relationships between dripper discharge and soil wetting pattern for drip irrigation;
点源滴灌滴头流量与湿润体关系研究
2.
Effects of dripper discharge and spacing on growth of cucumber in Chinese solar greenhouse under drip irrigation;
日光温室滴灌条件下滴头流量和间距对黄瓜生长的影响
3.
Experiments on effect of dripper discharge on cotton-root distribution
滴头流量对棉花根系分布影响的试验
5)  emitter discharge
滴头流量
1.
A series of laboratory experiments were conducted to quantify the influences of irrigating water salinity, emitter discharge rate on the patterns of the wetted soil column and the wetting front dynamics.
采用15°扇柱体有机玻璃土槽,研究了不同水质和滴头流量对盐碱土湿润锋运动的影响。
2.
Emitters with low discharge,small flow-path dimension and higher emitter discharge exponent were also subject to clogging.
水质和滴头内沉淀物质的分析显示,化学沉淀(主要成分为CaCO3和MgCO3)是引起滴头堵塞的主要方式,滴头流量小、流道尺寸小和流态指数偏高也增加了滴头堵塞的风险。
6)  manufacture deviation
制造偏差
1.
5% and ±1%,then the uniformity of capillary tubes was calculated at different slope gradients and pressures in consideration of the manufacture deviation of drippers.
5%坡度和±1%坡度时,不同入口压力下滴头沿毛管的流量分布和水力损失,并结合滴头的制造偏差,计算得出不同坡度和压力条件下滴灌毛管的均匀度。
2.
On basis of current national standards “Calculation Method for Strength of Involutes Column Gear”, combining gear manufacture and appliance practice, the paper dissertates the influence of various common manufacture deviation to bearing capacity and other performance index of gear.
以现行“渐开线圆柱齿轮强度计算方法”国标为基础,结合齿轮制造及应用实际,分析论述了各种常见制造偏差对齿轮承载能力及其它性能指标的影响;同时,给出了诸项因素定量评价方法,有助于遇到工程实际问题时进行快速分析和判定。
补充资料:无柄液滴法、躺滴法、座滴法等
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性质:又称无柄液滴法、躺滴法、座滴法等。根据液面外形求算表(界)面张力的一种方法。当待测液液滴稳定地停在水平固体表面上,其外形与液体表面张力γ有关。根据巴什弗思–亚当斯(Bashforth-Adams)方程可有以下关系式ρ1和ρ2分别为待测液体及液滴外介质的密度,g为重力加速度,β为形状因子,b为大小因子。当液体与固体表面接触角大于90°时可根据测出的液滴的赤道半径及其与液滴顶点的垂直距离数值查表得出相应的β及b值,从而算出表面张力γ。本法简便,适用于吸附平衡时间长的体系和低表面张力的测定;也能用于测定界面张力及熔融金属的表(界)面张力。

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