initial death rate造句

例句与造句

1. WHO officials in Geneva said it revised its initial death rate of 6 percent to 10 percent after studying data from Canada, China, Hong Kong, Singapore and Vietnam.
2. The compensation law of mortality ( late-life mortality convergence ) states that the relative differences in death rates between different populations of the same biological species are decreasing with age, because the higher initial death rates are compensated by lower pace of their increase with age.
3. It's difficult to find initial death rate in a sentence. 用initial death rate造句挺难的