主要原因

We analyse main reason is more small order chose to go to the lavatory quick online trade means.

我们分析主要原因就是更多的小额订单选择了方便快捷的在线交易方式。

The major reason is due to lax management.

主要原因是由于松懈的管理。

Paint containing lead is a major cause of lead poisoning in children.

油漆中的铅是儿童中毒的主要原因。

Objective:The study occupation lead poisoning formation of main reason and treatment method.

目的：探讨职业性铅中毒形成的主要原因及治疗方法。

In the condition of the lower submergence depth, gas affecting is the principal factor leading to the low displacement coefficient.

在低沉没度条件下，气液比是导致抽油泵排量因数低的主要原因。

It is the leading cause of suicide .

这也是自杀的主要原因。

It is the leading cause of suicide.

它也是自杀的主要原因。

The conversion boundary of self-incompatibility was researched by sowing by stage. Sunshine of day and temperature was studied critically by investigating leafage and researching traits indoors. The results showed that the daily minimum temperature was the principal factor of affinity conversion and the affinity conversion boundary was 16.5~18.1℃.HE97 was primarily regard as self-incompatible line in this research. The method was by inbreeding and sib HE97, Half the silk of HE97 and Zheng58. Inbreeding and cross have been done simultaneously. The extending condition of pollen tube was observed by dying the silk after pollinating 4 hours. The individuals with pollen tube were observed having seeds, while the individuals without pollen tube were observed having few seeds or no seeds. So this study regard HE97 as sporophytic self-incompatibility .The planting ration of female parent HE97 and male parent 87-1 was 4:1.The nature cross-pollination was studied by the theory of endosperm xenity, the study show that the setting percentage of HE97 was 625%, in which the seed in self was 70% and the seed in hybrid was 30%. This was consistent with the study of silk anatomy structure, then come to the same conclusion: compatible pollen germination and fertilization can stimulate the self-incompatible pollen germination and fertilization in the same corn cob.

通过分期播种，进行了光温敏自交不亲和材料HE97亲和性转换区间的研究，依据田间跟踪调查叶龄及室内考种研究了HE97亲和性转换区间的光温临界值，结果表明：1日最低温度是影响HE97自交不亲和性的主要原因，亲和性转换区间在16.5℃～18.1℃之间。2通过HE97自交和姊妹交以及将HE97与郑58作为双亲，各自的花丝一分为二，分别正反交，授粉后4个小时分别取其花丝进行固定、染色，观察花粉管的伸长情况，根据结实率与花粉管伸长的对应关系，结果发现观察到花粉管的对应植株收获到了种子，而没有观察到花粉管的对应植株结实率极低或没有结实，本研究把HE97初步划为孢子体自交不亲和类型。3以HE97为母本，87-1为父本，按4母：1父行比，通过花粉直感效应研究天然异交率，结果母本HE97结实良好(62%)，其中自交粒占70%，异交粒占30%，结合花丝切片观察表明，亲和花粉的萌发及受精会导致落在同一果穗柱头上不亲和花粉的萌发不再受抑制。

The enhancement of the LED performance is mainly attributed to the decrease in electronic leakage current.

应力补偿层AlGaN的加入导致器件漏电流的降低被认为是器件效能提高的主要原因。

This paper analyzes the impact of Taiwan's fifth Legislative Yuan election on its domestic politics and cross-strait relations as well as the major causes of the Kuomintang's unexpectedly grave defeat in the election.

本文分析了台湾第五届立法院选举结果对台湾政局及两岸关系的影响，并探讨了国民党在此次选举中惨败的主要原因。

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。