因素

Results the risk for developing gestational diabetes mellitus was increasing with growth rate of pregnant body mass index (or=89.1274,95%ci6.2574～95.1757),pre-pregnancy body mass index (or=8.1826,95%ci7.1804～41.3126) years of age(or=2.4322,95%ci2.2815～15.2251) and having family history of diabetes(or=4.1254, 95%ci 4.0247～27.2024),but no statistical difference was observed in pre-pregnancy height.the faster women' s growth rate of body mass index in duration of increase pregnancy,the more possible who would fall in ill with gestational diabetes mellitus.conclusion the incidence of gestational diabetes mellitus was related to the growth rate of pregnant body mass index.

结果 多因素回归分析显示，孕期体质指数增加大(or=89.127？4，95％ci=6.257？4～95.175？7)、孕前体质指数大(or=8.182？6，95％ci=7.180？4～41.312？6)、有糖尿病家族史(or=4.125？4，95％ci=4.024？7～27.202？4)、年龄大(or=2.432？2，95％ci=2.281？5～15.225？1)均增加孕妇发生妊娠期糖尿病的风险；未发现身高与妊娠期糖尿病发病有关。排除孕前体重干扰后，孕期体重增长速度越快，发生妊娠期糖尿病的风险越大。结论孕期体质指数增长过快是妊娠期糖尿病的独立危险因素。

I have engaged in the research of rice stripe blight control for many years in Shanghai farm and found some problems: though there were some reports of research on rice stripe blight resistance, strategy of prevention and cure for the disease has been face to farmer mainly, while geographical location, cultivars and cultivation system adopted on the Farm all affect the effect of control. On the other hand, our Farm has paid attention to the chemical prevention and cure for rice stripe blight and ignored other measures. As for the chemical prevention and cure, phenomenon of drug-resistance and bad effect of prevention and cure existed usually.

本人在上海农场多年从事该课题研究过程中发现的问题：目前对水稻条纹叶枯病研究的报道较多，在防治对策上主要是针对农户，缺乏关于农场地域因素、品种、栽培制度等因素对水稻条纹叶枯病发生及防治的影响的报道；在水稻条纹叶枯病的防治上，农场仍是以化学防治为主，对其他防治措施还不够重视；在化学防治过程中，存在抗药性、防效不佳等问题。

On the basis of two criteria of stomatal limitation of photosynthesis suggested by Farquhar and Sharkey,the re-dominant limiting factor of photosynthesis is stomatal conductance of stomatal limitation in the forenoon,but the midday depression of photosynthesis at noon and the decrease of photosynthesis in the afternoon are the results of low carboxylation efficiency of the mesophyll leaf.

根据Farquhar和Sharkey的观点，造成净光合速率下降的原因既有气孔限制又有非气孔限制因素，上午净光合速率下降的主要是由气孔限制因素造成的，午间和下午光合速率的降低则主要归因于叶肉细胞羧化效率的降低。

This paper studies the concept and key facts of the enterprises' autonomous technological innovation, then it constructs a model of the key factors' conduction mechanism according to the logic of the SCP structure, finally it analyses the innovation path of china's enterprises and suggests that under the resources constraint, the feasible solution of china's enterprises is congregating resources to capture the subdivide market, then taking this as the chance, realizing the transformation from partial breakthroughs to overall rising by technology accumulation.

本文在现有研究的基础上，研究了自主技术创新的概念及其关键因素，然后按照战略－行为－绩效的逻辑关系，构造了关键因素间的传导机制模型，对我国企业自主创新的路径进行分析，认为在资源约束下，我国企业的可行途径应是通过资源集聚，占领细分市场，保证技术和市场的良性互动，然后以此为契机，通过技术积累实现由局部突破向全面崛起转化。

Hygiene factors are the factors that seem to make individuals feel dissatisfied with their jobs.

保健因素是使个人对工作感觉不满意的因素。

Hygiene factors are factors that seem to make individuals feel dissatisfied with their jobs.

保健因素是使个人对工作感觉不满意的因素。

Ferroconcrete circle form is the main pressure pipelines type mostly adopted in built power stations from 1970"s to 1980"s in our country. During long running process, there are many factors such as design faults, bad materials, manufacturing deficiencies, improper constructions, environment factors, function changed, load increase, material aging, damage and so on which lead to all kinds of problems containing deficiency, crack, lack of strength and structure destroyed .

在我国七八十年代建成的电站压力管道，大多采用的是钢筋混凝土圆形结构，在长期运行过程中由于其设计失误、材质恶劣、制作偏差、施工不当、环境因素、功能改变和荷载增加等因素及材质本身的老化、损害等而导致钢筋混凝土压力管道产生各种各样的缺陷、损伤、裂缝过大、承载力不足或结构破坏等问题。

Effects of technology or maternal factors on perinatal outcome after assisted fertilisation: a population-based cohort study.

辅助受精后技术因素或产妇因素对围产期结局的影响：一项以人口为基础的群组研究。

The Chapter 2, aiming at the issues in the research field of accounting policy choice, sets bases and research framework for the influencing factor analysis of accounting policy choice and the academic ground and research framework of corresponding contract theory. The second part, includes the Chapter 3, 4, 5, 6 and 7, Based on the research framework and theoretic bases illustrated in the first part, it emphasizes and investigates on the five external factors that would greatly influence the accounting policy choice: 1 Research on the restriction from accounting laws and regulations.

第二章主要是针对目前会计政策选择理论研究所存在的问题，提出会计政策选择影响因素分析的会计理论基础和研究框架，并为能够从契约理论和委托一代理契约关系理论的视角来解释和分析会计政策选择的影响因素问题，建立相应的理论基础和研究框架。

Firstly, this paper seizes major relative factors and puts the theory of economic growth into industry field and makes ration research on the major factors which influence the economic growth of Guangdong industry with the latest econometric method.

通过对1985-2004年广东工业经济的研究，发现物质资本投入、劳动力投入、人力资本投入、国际贸易和能源是广东工业经济增长的重要因素，这五大因素与工业经济增长分别存在唯一的长期均衡关系，并给出了相应的贡献率测度。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。