Mortality is the number or volume of trees periodically rendered unusable through natural causes . 枯损是一类由于自然原因而定期变得无用的林木株数或材积。
A statistically significant excess in lung cancer mortality occurred in immigrants age 45 to 64 . 一个有统计意义的肺癌死亡率高峰出现在年龄为45到64岁的移民中。
These results were interpreted to indicate that cultivars with high chilling requirements had less bud mortality . 这些结果说明长低温要求的品种，其芽的死亡率要少。
This practice continued, and by 1632, these bills of mortality listed birth and deaths by sex . 这项工作一直延续下来，到1632年，《死亡率报表》按性别列出了出生和死亡的人数。
The morbidity and mortality of the host species is usually proportional to the number of cocidial cocysts ingested . 宿主的发病率和死亡率与吃进球虫卵囊的数目，通常是成正比的。
The report pointed out that social and occupational factors normally play an important part in determining mortality . 报告指出，社会与职业的因素在正常情况下对死亡就有重要影响。
Kallner and groen studied the mortality from coronary heart disease and cerebrovascular accidents among immigrants to israel . Kallner和Groen研究了去以色列的移民中的患冠心病与脑血管死亡率。
Statistics on occupational mortality have been of greater value in these respects than in initiating the study of new aetiological agents . 不同职业的死亡率的统计对这些方面的价值较之对于开展新的病因研究的价值更大。
In this country there is about a twofold difference in mortality for areas of high atmospheric pollution compared with the smoke-free rural areas . 在这个国家，大气高度污染的地区与没有烟尘的乡村比，死亡大约有两倍的差异。
The changes reveal, over the 17－year period, a 2. 2－fold increase in mortality rates for white males and a 3－fold increase for nonwhite males . 这种变化表明，在17年的时间里，白人男子的死亡率增加到22倍，非白人男子增加到3倍。
