发病率用来表示特定人群中的发病频率和得病状况。
Morbidity rates measure the frequency of illness or morbidity within specific populations.
结果表明，枝干轮纹病病斑在皮孔部位发病频率为92％，非皮孔部位为8％。
The results showed that the occurrence of ring rot disease was 92% in lenticels and 8% not in lenticel.
多数研究不能把一般人群当中的发病频率给予定量是因为它们是基于医院的并且被混杂在住院率的变化之中。
Most studies could not quantify disease frequency in the general population as they are hospital-based and confounded by variations in threshold and the rate of hospitalization.
在对引发病情的成因的频率及强度进行评定后，研究人员发现有8类活动比其他诱因更能引发脑出血。
By assessing the frequency and intensity of their exposure to such triggers, researchers found that eight activities appeared to make a rupture more likely.
目的：研究rp1基因在中国RP患者中的突变频率、特征及其在RP发病机制中所起的作用。
OBJECTIVE: To investigate the mutation frequency, characteristics of RP1 gene in Chinese RP patients and its role in RP pathogenesis.
目的研究广西恭城县瑶族和汉族居民的G-6-PD缺乏症发病率及基因频率。
Objective To survey the percentage and gene frequency of G-6-PD deficiency in Yao and Han ethnic people in Gongcheng, Guangxi province.
结论孕早期限食、饮酒可产生混合型IUGR动物模型，且IUGR的发病可导致胚胎心电频率及电压的改变。
Conclusions a mixed type of IUGR animal model could be induced by restricting feed and drinking on maternal rat, and the frequency and the voltage of the ECG can change because of IUGR.
目的研究大脑中动脉粥样硬化性狭窄患者脑深部小梗死的发生频率和发病机制。
Objective To investigate the morbidity rate and pathogenic mechanism of deep small infarction in patients with middle cerebral artery stenosis( MCAS).
众多研究表明，暴露在极低频率电磁场的儿童罹患白血病的风险增加，但极低频率电磁场似乎不增加乳腺癌和心血管疾病的发病风险。
Studies have consistently shown increasing risk for childhood leukemia associated with ELF-EMF, whereas ELF-EMF most likely are not a risking factor for breast cancer and cardiovascular disease.
早发冠心病组与ACE的DD基因频率和AGT的M235T基因频率分布相关，ACE-DD基因型频率与AGT-TT基因型频率在冠心病发病中具有协同作用。
The distribution of ACE-DD genotype and AGT-M235T genotype associates with premature CAD, and the combined analysis of AGT-TT with ACE-DD allele has a synergistic effect on risk of CAD.
上世纪80年代，随着手机在美国投入使用，低频率辐射开始影响人类大脑，脑癌发病率随之缓慢上升。
During the 1980s, just as Americans began pumping low-frequency radiation through their skulls with cell phones, brain cancer rates in the U. S. slowly increased.
上世纪80年代，随着手机在美国投入使用，低频率辐射开始影响人类大脑，脑癌发病率随之缓慢上升。
During the 1980s, just as Americans began pumping low-frequency radiation through their skulls with cell phones, brain cancer rates in the U. S. slowly increased.
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