常見例句Beijing's birthrate was 6.1 per thousand,death rate,5.3 per thousand,and the natural population growth rate was 0.8 per thousand,down by 0.1 permillage points. 全市人口出生率爲(wèi)6.;1‰,人口死亡率爲(wèi)5Beijing's birthrate was 6.1 per thousand, death rate, 5.3 per thousand, and the natural population growth rate was 0.8 per thousand, down by 0.1 permillage points. 全市人口出生率爲(wèi)6.;1‰,人口死亡率爲(wèi)5Keywords motor exhaust;induce;plant cell;permillage of micronucleus cell; 發(fā)動機(jī)廢氣;誘導(dǎo);植物細(xì)胞;微核細(xì)胞千分率;Keywords apical fabaoeous root bacteria microkemel microkemel permillage pollution; 蠶豆根尖;細(xì)胞微核;微核千分率;汙染指數(shù); 返回 permillage