主要原因

The presence of ferric oxide in the ores is key factor resulting in low whiteness of illite.

河南舒山伊利石矿中氧化铁的存在是造成伊利石白度低的主要原因。

This paper shows that the reason causes cracking is the existence of euructic with low melting point in on and the ferric oxide on the surface of low carbon steel.

分析了裂纹产生的主要原因，即纯铜中低熔点共晶的影响及低碳钢铁锈和加热后氧化皮的影响。

Results show that magnetism of fluid weighted by ilmenite powder or ferric oxide powder is the main factor of friction increasing.

结果表明，磁性是钛铁矿粉和氧化铁粉加重钻井液摩阻增加的主要原因，润滑剂不能从根本上解决这一问题。

The main reasons of ladle lining damage and the factors affecting extra-low ferrochromium production with Perrin Process are analysed,and the measures to prolong ladle life are put forward.

分析了热兑法微碳铬铁生产中，反应包衬损坏的主要原因及其影响因素，提出了延长反应包寿命的措施。

The main shortages in ferrosilicon disintegration and the cause are analysed.

分析了引起硅铁粉化的主要原因，提出了控制硅铁粉化的措施。

The final breakup of the feudal system had three main causes.

封建制度的最后崩溃有三个主要原因。

The traditional commercial law is only the distinctive production under the feudal separation lasting for a long time in the Europe in the history, where the centralized countries lack of unity, and the political powers and rights distributed among other forces of King, feudatory and church. Its closure and particularity gradually disappeared after being brought into the national jurisprudence. But the scholar s vision had not yet been extended besides the civil law and commercial law, which is the historical origin and main cause of the afterwards problems of the civil and commercial unity and separation argument was difficult to draw a conclusion.

传统商法仅仅是历史上欧洲这一特定地区在缺乏统一的中央集权国家，政治经济权力分散于国王、封建领主、教会几大势力，封建割据长期存在这一特定环境下的独特产物，其封闭性和特殊性在纳入国家法的体系后逐渐丧失；但是学者的视野又没能拓展到民法、商法之外，这是后来民商合一与分立之争长期难成定论的历史根源与主要原因。

The banded fibrocartilage of fibular bed and soft tissues contracture are the main reasons causing malformation.

腓骨床纤维带及挛缩的软组织是致畸的主要原因。

Taking the finite element result as a base,a kind of method on determining more precisely the dangerous operation condition of the crankshaft was put forward.

曲轴出现过早失效或断裂现象的主要原因之一就是强度不够。

"Experimental evidence that human impacts drive fire ant invasions and ecological change,"作者 Joshua R.

一项新的研究发现人类的土地开发是让火蚁变成如此强大的入侵者的主要原因。

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。