We must distinguish between average cost, marginal cost, and average marginal cost.

At the peak of efficiency, the marginal cost of production equals the average cost of production.

在效率的峰值点, 生产的边际成本等于生产的平均成本.

The average error is smaller than 13 % by comparing the results of simulation and experiment.

模型平均误差小于13%,可以满足预测需要.

NLF 9 provides better-average flow rate and consequently lower pressure loss.

NLF9具有更高的流量和更低的压力损失.

The average flow of the river is 200 cubic metres per second.

这条河平均流量为每秒二百立方米.

Average Grade A office rentals are predicted to rise 19 % over the next 12 months.

预未十二个月甲级办公平均租升幅约19%.

Traditionally, both average grade levels and average performance have been quite high in 6.111.

以往, 6.111中的平均成绩水平和平均表现都相当高.

The average hotel occupancy rate increased threefold to over 60 per cent this month.

酒店的平均入住率上升三倍,本月已达百分之六十以上.

But does that mean those of above-average income should be excluded as well?

但这是不是就意味着,那些中上收入的人也该被排除在外 呢 ?

The average income of the staff has been increased by 50 percent compared with last year.

与去年相比,该单位职工的收入增加了50%.

House prices against average income is a measure of affordability in each country.

房价与平均收入之比是衡量各国购买力的一种手段.

David asked people around whether 1200 yuan was higher than the average income in Lanzhou.

大卫去问别人,1200元在兰州是不是很高了?

Compared with ten years ago, the average income in this city has been increased five times.

与十年前相比, 这个城市的人均收入增加了五倍多.

The ratio of house prices to average income has fallen by 25 % in China since 1999.

自1999年以来,中国的房价收入比已经下降了25%.

The employees'average income in this company is about $ 1500 a month.

这家公司的员工平均所得大约是每月1500美元.

A higher price would not be practical given the average income of the population.

鉴于当地居民的平均收入水平,更高的价格或不可行.

Families headed by males had double the average income that families with female heads had.

男性持家的家庭平均收入是女性持家家庭的两倍.

The average income in New England is below that of the nation.

新英格兰的平均收入低于全国的平均收入水平.

At this rate, average income doubles every 35 years.

从这个速度来看, 每35年收入就会翻倍.

Families with average income shall live in rent houses.

中等收入家庭应该租房子住.

For any given distribution, the lower the average income level, the greater the incidence of poverty.

对任何既定的分配来说, 平均收入水平越低, 贫困的范围就越大.