In treated groups,the dead number and the death rate of S.henanense were both increased with the rising of the concn.of heavy metals and the prolonging of the treating time. 處理組中河南華溪蟹溪蟹的死亡數和死亡率均隨重金屬濃度的升高和處理時(shí)間的延長(cháng)而增加。
The stubbornly high numbers of maternal deaths will not go down until more women have skilled attendants at birth and access to emergency obstetric care. 如果沒(méi)有訓練有素的陪護和緊急助產(chǎn)護理，居高不下的產(chǎn)婦死亡數是不可能下降的。
