大师作文网英语翻译The typical formula used to determine the necessary volu
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英语翻译
The typical formula used to determine the necessary volume of water or flow rate to apply is as follows:
Gross need= (Net need for ET leaching)/((WAE/100))
ET stands for evapotranspiration and is discussed in Section 3.15.The value of WAE must account for the DU,evaporation losses,and a reasonable estimate of management (timing).
Example
Find the gross depth that must be applied and the necessary sprinkler gallons per minute.Sprinklers spaced at 40X40 ft.Estimated WAE is 75%.Sprinklers can run for 4 hours and must apply a net of 1.5 in.
Formula
Gross=Net/(WAE/100)
Gpm =(Gross inches)X(Area in square feet)/(Hours X 96.3)
Gross=1.5 in.(75%/100)=2.0 in.needed
Gpm =(2.0X40’X40’)/(4hr.X96.3)=8.3gpm
上面的net会不会是网?因为文中"must apply a net of 1.5 in."这里的是否应该解释为需要有1.5英寸的滤网?
The typical formula used to determine the necessary volume of water or flow rate to apply is as follows:
Gross need= (Net need for ET leaching)/((WAE/100))
ET stands for evapotranspiration and is discussed in Section 3.15.The value of WAE must account for the DU,evaporation losses,and a reasonable estimate of management (timing).
Example
Find the gross depth that must be applied and the necessary sprinkler gallons per minute.Sprinklers spaced at 40X40 ft.Estimated WAE is 75%.Sprinklers can run for 4 hours and must apply a net of 1.5 in.
Formula
Gross=Net/(WAE/100)
Gpm =(Gross inches)X(Area in square feet)/(Hours X 96.3)
Gross=1.5 in.(75%/100)=2.0 in.needed
Gpm =(2.0X40’X40’)/(4hr.X96.3)=8.3gpm
上面的net会不会是网?因为文中"must apply a net of 1.5 in."这里的是否应该解释为需要有1.5英寸的滤网?
net need和gross need相对,前者是净需求量,后面是毛需求量.
试译一下：
确定需水量的常用公式如下：
总需水量＝渗滤所需ET净量/WAE*100
其中ET为蒸发量,数值计算参见3.15部分.WAE（可能是蒸发损失率及估算误差?）值必须包含DU（不知道什么东东?）、蒸发损失及相当的操作估算值.
例题：
请计算所需灌溉系统总深度和每分钟灌溉量.其中灌溉距离40X40英尺.WAE估计值为75%,灌溉系统可以运行4小时,必须使用1.5英寸的净量.
公式：
总量＝净量/损失率*100
Gpm（每分钟灌溉量）＝总量（英寸）*面积（平方英尺）/[时间（小时）*96.3]
需要的总量＝1.5（英寸）/75%*100＝2.0英寸
Gpm＝（2.0*40英尺*40英尺）/（4小时*96.3）＝8.3gpm
试译一下：
确定需水量的常用公式如下：
总需水量＝渗滤所需ET净量/WAE*100
其中ET为蒸发量,数值计算参见3.15部分.WAE（可能是蒸发损失率及估算误差?）值必须包含DU（不知道什么东东?）、蒸发损失及相当的操作估算值.
例题：
请计算所需灌溉系统总深度和每分钟灌溉量.其中灌溉距离40X40英尺.WAE估计值为75%,灌溉系统可以运行4小时,必须使用1.5英寸的净量.
公式：
总量＝净量/损失率*100
Gpm（每分钟灌溉量）＝总量（英寸）*面积（平方英尺）/[时间（小时）*96.3]
需要的总量＝1.5（英寸）/75%*100＝2.0英寸
Gpm＝（2.0*40英尺*40英尺）/（4小时*96.3）＝8.3gpm
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