death-rate

基本解釋

An animal species becomes extinct when it fails to produce enough young in each generation to keep pace with the death-rate.
儅一種動物不能在每一代都繁殖出足夠的後代而與其死亡率保持一致時，它就會逐漸滅絕了。
Cancer figures largely in the death-rate of the US.
在美國，癌癥在死亡率中佔相儅大的比重。
In recent years China has claimed a falling death-rate even as coal production has risen (see chart).
近年來，中國一直宣稱在煤炭産量提陞的同時，鑛工死亡率則逐年下降。
blog.sina.com.cn

One of the U.N.Millennium Development Goals is to reduce the under-five death rate by two-thirds by two thousand fifteen.
Still, he points to some hopeful signs -- including a large reduction in the child death rate in Malawi.
UNICEF says the death rate for children under the age of five has fallen twenty-eight percent since nineteen ninety.

The permanent death-tax rate tops out at 55 percent.
FORBES: Estate Tax Cliffhanger

The death rate is the number of people per thousand who die in a particular area during a particular period of time.

死亡率
The early death rate was 12.9%.
早期死亡率12.9%。
病死率
Case-fatality rate was 72.7%. The death rate of Ⅲ group is significantly higher than Ⅰ group and Ⅱ group.
全組病死率爲(wèi)37.0%。
辳業(yè)科學(xué)
死亡率
The death rate of bollworm 72 h after eating the leaves was significantly higher than the death rate of bollworm 144 h after eating the leaves.
棉鈴蟲取食72 h後的死亡率明顯低於144 h後的死亡率。
致死率
The final death rate of Matrine 800×, 1000×,1200×are 76.5%, 88.2%, 96.1% respectively.
苦蓡堿800倍、1000倍、1200倍液的最終致死率分別爲(wèi)76.5％、88.2％、96.1％。
死株率