21的例句大全

In the temperature range of the experiment ( 21~ 33 ℃), the survival percentage of whole generatio, the number of eggs laid per female and the index of population increase showed a general trend which can be described by parabolic equations.

在试验温度范围内（21℃－33℃）世代存活率、雌成螨平均产卵量、种群增长指数均呈抛物线趋势，可以用二次抛物线方程表示其随温度的变化情况。

Action Framework for Population Education on the Eve of the Twenty-first Century 21

世纪前夕的人口教育行动框架

Pirates have hijacked an Italian cargo ship with at least 21 crew members in the dangerous waters near Somalia.

海盗在索马里附近的危险水域劫持了一艘意大利货轮及船上至少21名船员。

Export and import growth in Jan-Feb came in at 21.3% and 36.0% year-on-year, higher than 17.9% and 25.6% in December.

1-2月出口和进口的同比增速分别为21.3%和36.0%，分别高于12月份的17.9%和25.6%。

Question 21.Why does the speaker say the worst way to complain is over the telephone ？

问题21。为什么说打电话投诉是最不可靠的方式？

Thus recovery rate is increased by 4.21%, which has an obvious effect.

PV，后续水驱阶段采收率提高值为4.21%，增油效果显著。

Analysis of 21 patients with positive anti-HIV

21例HIV抗体阳性报告分析

HIV viral load and CD4 count of 21 HIV infected individuals and AIDS patients

21例HIV感染者/艾滋病患者HIV载量及CD4细胞数分析

In September, the U. S. is believed to have launched at least 21 such attacks, an unprecedented number and nearly all in North Waziristan.

九月，美国被认为已发动至少21次此类袭击，这是个空前的数字，并且几乎所有都在北瓦济里斯坦。

I am confident both of us will scale new heights in achievement in the 21 st Century.

我亦深信两地在二十一世纪定能再攀高峰,取得更辉煌的成就.

Re-examinations with B-ultrasonography or intravenous urography ( IVU) at 3 months after operation in 46 cases revealed no ureteral stricture. Hydronephrosis subsided by 1.4 ± 0.5 cm in 28 cases and completely disappeared in 21 cases.

49例术后3个月复查B超或静脉尿路造影，均未发现输尿管狭窄，28例肾积水减轻（1.4±0.5）cm、21例肾积水消失。

Hong Kong developers have benefited from an 80 per cent increase in average home prices since 2009. Sun Hung Kai reported record underlying profit ( excluding property revaluations) of HK$ 21.5bn, a 55 per cent year-on-year increase, in its last financial year.

自2009年起，香港平均房价上涨了80%，开发商从中受益。新鸿基财报显示，上一财年其基础利润（不计房产价值重估）达215亿港币，同比增长55%。

Under appropriate conditions, it is capable to produce 21 nymphs/ vivipara and 9 eggs/ oviparous female.

孤雌蚜在条件适宜时，一生可产21头若蚜，1头雌性蚜可产卵9粒。

When he was 21, someone suggested doing a TV program.

他21岁的时候,有人建议做一个电视节目。

Only 21 percent used e-banking services, and 3.9 percent booked tickets through the Internet.

仅有21%的人使用过网上银行服务, 3.9%的人曾在网上订票.

The women who underwent the interview process looked remarkably young, averaging merely 21.5 years in age.

参与面试的女性显得格外年轻，平均年龄仅为21.5岁。

Prices of commodities have skyrocketed by 21% since the beginning of January.

自一月初以来，商品价格已暴涨21%。