Cost rate per unit [会计] 单位成本率
flow rate per unit power 比能耗产水率
liquid flow rate per unit 液体燃料火箭发动机
Uniform emission charge — a charge on effluent that applies the same per-unit rate to all sources regardless of their size or location.
均匀排放支付费——对于废水排放的费用，它对所有资源不管其规模或是位置都使用相同每单位费率。
Per unit of growth, Brazil reduced its proportional poverty rate five times more than China or India did.
以单位增长计算，巴西减贫比例是中国或印度的五倍还多。
The other way to think about it is divergence is the source rate, it is the amount of fluid that is being inserted into the system, that is being pumped into the system per unit time per unit area.
另外一个理解方法是，散度是源头的“冒出率”，它是流体往系统输入的量，也就是单位时间内，单位面积新冒出的流体。
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