主要原因

The results show that, after treated with microwave radiation, the surface free energy of the powder is enhanced from 39.6mJm^(-2) to 41.8mJm^(-2), This is mainly caused by the rearrangement of electric charges on the grain crystal surface, and this phenomenon is coincident with the theory of electron transition caused by energy band splitting of the grain crystal surface.

测定结果显示微波辐射后硫酸钙粉末的表面自由能得到提高，从39.6mJm^(-2)增加到41.8mJm^(-2)，其主要原因是使硫酸钙表面能的极性成分得到了较大的提高。这一结果归于微波幅射引起晶粒表面的电荷重排，与晶粒表面能带分裂引起的电子跃迁理论是相吻合的。

The main reason for the 1990 revision of Incoterms was the desire to adapt terms to the increasing use of electronic data interchange.

1990年修改通则的主要原因是使贸易术语能够适应目益广泛使用的电子数据交换系统。

The main reason and solution: this is mostly because the temperature is too high, hot stamping and should be appropriate to reduce the electrothermic temperature, to play as little as possible, to reduce unnecessary empty car parking spaces, because the empty wagons, parking makes the electrothermic temperature rise.

主要原因和解决方法：这种情况多数是因为烫印温度太高，应适当降低电热板温度，要尽量少打空车，减少不必要的停车，因为空车、停车都会使电热板温度升高。

Thefertilization of eggs in large embryo sac may result in the embryo far from forming.

大胚囊中的卵细胞受精发育可能是形成中位胚的主要原因。

Ectopic thyroid is a congenital anomaly resulted from the embryologic defects of the medial anlage of the thyroid.

甲状腺胚胎发育异常是异位甲状腺的主要原因。

The results of this study have identified the most common causes of SSTIs in hospitalized patients in North America, and can be used to make informed decisions concerning standards of empiric treatment for SSTIs in this region.

本研究的结果是验证了北美住院病人中引起皮肤和软组织感染的最主要原因，同时可以为此区域的SSTIs在考虑经验治疗的标准中做出一些可预知的决定。

The main influential factors on surgical results were whether presence of encasement of the basilar artery and its branches and of the arachnoidal cleavage plane between the tumor and the brain stem.

肿瘤不能全切除和出现严重并发症的主要原因是肿瘤包裹了基底动脉及其分支以及肿瘤破坏了软脑膜使肿瘤与脑干间失去界面。

Results: The main reasons for acute encephalocele were delayed intracranial hematoma,acute brain swelling,hypotension or hypoxia and injury of large veins.

结果 导致脑膨出的主要原因有迟发性颅内血肿、急性弥漫性脑肿胀、低血压、低血氧及较大回流静脉的损伤。

The variations of expression of potassium channel genes are likely to be caused by the endogenesis hormone in tobacco after topping, and it has a direct impact on the potassium accumulation and distribution simultaneously.

打顶后烟株内源激素水平变化可能是调控钾离子通道基因表达的主要原因，而钾离子通道基因表达的变化直接影响着烟株体内钾素累积和分配。

The main causes of the pollution identified result from the irregation of using the polluted water from industries and the endogenic pollution of F and Hg elements is mainly caused by...

造成污染的主要原因是工业三废中的污水长期被利用灌溉，同时查明活动断裂是F、Hg等元素的内生污染源。

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。