1.
Weakly persistence in the mean and extinction of Logistic single population with harvesting in a polluted environment
污染环境中具有捕获的Logistic单种群的弱平均持续生存与绝灭
2.
With the average lifespan, marriage and childbearing ages all continuing to rise,
鉴于平均寿命、适婚年龄、和生育年龄持续上升，
3.
All of these groups continue to have above-average birth rates.
所有这些族群出生率将继续维持在平均数以上。
4.
Steady increase of average national income and consumption
国民平均所得及消费水平持续升高
5.
Ecological vulnerability,sustainable development and eco-ethics
生态脆弱性、可持续发展与生态伦理
6.
In America, they last about two years on average.
在美国，同居关系平均持续两年左右。
7.
The mean onset of headache was 3.4 days (range, 2-32 days) after delivery.
结果：产后头痛平均持续时间为3.4天。
8.
The average recession lasts just 11 months.
一次衰退平均持续时间只有11个月。
9.
Random Views on Existence · the Questions of Existence · Philosophy of Existence and Sustainable Development;
生存·生存问题·生存观念与可持续发展散论
10.
The land we depend on depends on us to keep balance in this complicated and delicate system.
我们赖以生存的土地需要我们在这个既复杂又脆弱的系统中保持平衡。
11.
For the second year in a row, moreover, same-store sales, measured in pounds, were virtually unchanged.
同时连续第二年单店平均营业额维持不坠，
12.
Accelerate Sustainable Development of Education to Raise Average Educational Level
促进教育持续发展,提高人均受教育水平
13.
THE CHARACTERISTICS OF THE LARGE SCALE MEAN CLOUDINESS OF CONTINUOUS HEAVY RAIN OVER CHANGJIANG AND HUAIHE RIVER BASIN IN 1991
1991年江淮流域持续暴雨的大范围平均云量特征
14.
A New Model of Average Break Arc Duration between Relay Contacts
继电器平均开断电弧持续时间的新模型
15.
RESULTS: The median survival was 11 months, with a 3-year survival of 24%.
结果：平均生存时间是11个月，3年生存率为24％。
16.
Sustainable Development Study in Ecological Vulnerable Ecotone in the West Part of Heilongjiang Province China;
黑龙江省西部生态脆弱带可持续发展研究
17.
Sustainable Utilization of Land Resources in Southwest Ecological Brittle Zone;
西南生态脆弱带土地资源可持续利用探讨
18.
Study on Agricultural Sustainable Development in Guizhou Karst Mountain Region Under Fragile Ecology Restriction;
脆弱生态约束下贵州岩溶山区农业可持续发展