在病因学上

Neural tube was formed by the apophysis,bend and close of neural crest.

它们在病因学上是多因素的，是遗传学因素和环境因素共同作用结果。

Wasting is not etiologically or pathologically different from undernutrition but has been used customarily in certain contexts.

消瘦并非病理病因学或因营养不足而不同，但习惯上被用来在某些情况下。

Numerous bacteria, viruses, and protozoa have been implicated as etiologic agents for NGU, although definitive proof for causation with most of these agents is lacking. Therefore, managing cases with recurrent or persistent NGU is one of the most difficult problems in venereology.

在临床上常见的是迁延不愈以及衣原体、支原体均为阴性的NGU患者，对于该类患者的治疗已成为性病学上较为棘手的问题，并引发了人们对于其他病因研究的兴趣。

More recently, however,non-chlamydia trachomatis and non-mycoplasm NGU has been accounted for 50% of the total of NGU. Most patients with recurrent symptomatic or persistent NGU receive negative test results for chlamydia trachomatis and mycoplasm, and the cause of such NGU is unclear.

在临床上常见的是迁延不愈以及衣原体、支原体均为阴性的NGU患者，对于该类患者的治疗已成为性病学上较为棘手的问题，并引发了人们对于其他病因研究的兴趣。

Concept of distribution of disease、arithmetic of indicator of disease frequency、prevalence intensity classification、cross-sectional analysis method and analysis method of birth cohort study、two basis in pathogeny estimation of Immigration Epidemiology.

疾病分布地概念、疾病频率指标算法、流行强度分级、横断面分析法和出生队列分析法、移民流行病学在病因判断上的两个根据。

Although the etiology and pathophysiology of LBP during pregnancy are poorly understood, one plausible hypothesis is that causes of LBP in pregnancy are multifactorial (i.e., biomechanical stress on ligaments and joints, muscle fatigue, and the effect of the hormone relaxin on joint laxity), with ≥1 factors dominating in an indiidual case.

尽管对孕期LBP的病因学及病理生理学了解甚少，有一个似乎可信的假说宣称：孕期LBP是多因素引起的（施加在韧带和关节的生物力学上的应力、肌肉疲劳及松弛肽的关节松弛作用），对单个对象来说，有不止一个因素交互作用。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。