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The average biomass was 1 1 1.83 g/m 2.and individual density was 2538 inds. /m 2in Chukchi Sea and Bering Sea. 楚科奇海和白令海大型底栖生物平均生物量为 111.;83g/m2;平均栖息密度为 2 5 38个 /m2 。
On the average biomass in Tanjing was the most in Mar.; Dalang was the most in Apr., and Cunliang was the most in May. 5. 各地的平均生物量3月份以谭井的最多，4月份大浪的最多，5月份存亮的最多。
The average biomass of zoo-plankton is 1. 10 mg/1, in which the copepoda presented 30. 9%, the cladocera - 24. 5%. The rotifera and protozoa are 26.4%. and 18.2%, respectively. 浮游动物生物量平均1.;10mg·L~(-1);其中桡足类占30
The average biomass of these stands amounts to 41.456 t/ha,in which the biomass of arbor layer litterfall and undergrowth were 32.799, 7.247 and 1.41Qt/ha or 79.1,17.5 and 3.4% of the total stands, respectively . 其中乔木层、林下植物层和枯枝落叶层的生物量分别是32.;799、1
The result showed that the average biomass of Oocystis borgei in the early, middle and late period of prawn culture was 98.02 %, 78.89% and 45.12%, respectively of the total microalgae. 结果表明：养殖前、中、后期，波吉卵囊藻平均生物量占浮游植物总生物量分别为98．02%25、78．89%25和45．12%25，成为虾池中的绝对优势种；
The average age of the boys in this class is fifteen. 本班男生的平均年龄是十五岁。
The average output of the factory is 20 cars a day. 该工厂的平均产量是每天20辆汽车。
His income is well below the average. 他的收入大大低于平均水平。
We fail one student per year on average. 我们平均每年有一个学生不及格。
Meals average out at 5 per head. 膳食平均每人5英镑。
On average we receive five letters each day. 我们平均每天收到五封信。
Each household sold, on the average, two pigs. 平均每户交售了两口生猪。
Our reps make on average six calls day. 我们的销售代表平均每天打六次电话。
His work at school is below the average. 他的学业成绩在一般水平以下。
The readings we took were well above average. 我们记录的读数远远高於平均数。
crustacea and mollusca. The average biomass (wet weight) and density of benthos were 46.53g/m~2 and 689ind. 其平均生物量46.;53g/m~2;
Tom's work at school is above the average. 汤姆的功课是中上等水平。
On average, 15 worth of goods is stole every day. 平均每天被窃取的货物价值为15英镑。
On the average, there are 300 tourists a week. 每星期平均有300游客。
The average age of the students is 19. 学生的平均年龄是19岁。