主要原因

The educt is boricacid on the surface of the composite, it is believed that oxide reaction takes placeduring the sintering of 〓-BN composite, and part of oxide outgrowth -〓has been left in the sintering body.

通过分析〓-BN复相导电陶瓷表面析出物及〓粉和BN粉的氧化产物，揭示〓-BN复相导电陶瓷中残留的氧化产物——氧化硼是〓-BN复相导电陶瓷引起潮解的主要原因。

It is also the key factor to influence the efficiency of solving the problem.

因此它也是影响接触问题分析效率的主要原因之一。

At the same time, the crane operation efficiency is also a chief reason to effluence on construction progress.

吊车使用效率也是影响施工进度的一个主要原因。

The deformation of the elastic support of the cantilever is considered due to the error between the theoretical calculation and the experimental data.

发现构件的弹性支撑是试验数据和理论计算出现误差的主要原因。

The results show that the microstructure of ventra1 scale for python was composed of micro-convex and plank structure that was periodically arranged, it was mensurable and could be described by 9 characteristic parameters. Its surface was different in their forward and backward lean angle. The frictional coefficient of the ventra1 scale had closely relationship with moving direction, it decreased with the increasing load. The value of the frictional coefficient was about 0.07. The frictional coefficient while python moved backward and laterally were equal, and that was 33% more than that moved ahead. The frictional force of the ventra1 scale surface was caused by mechanical tooth function of micro-convex, acting intermolecular force and material's elastic hysteresis. The difference of forward and behind bevel for micro-convex was the anisotropy reason of frictional force.

结果表明：腹鳞表面的微观结构由指状微突体和板结构部分周期排列而成，其结构可用9个特征参数定量描述；腹鳞表面摩擦力由分子作用力、表面微突体的犁沟力、楔形作用力以及材料弹性滞后共同引起；腹鳞表面的摩擦系数在0.07左右并与运动方向有关，摩擦系数随载荷增加而减小；后向运动及左、右侧向运动时摩擦系数基本相等，比前向运动时高33%左右；腹鳞表面微突体不同方向上倾斜角度的差异是引起摩擦各向异性的主要原因。

The harm and the cause of electric fire were expounded.

论述了电气火灾的危害及其产生的主要原因。

This is the main cause that the electrochemical performance was greatly improved.

这些都是快凝合金电化学性能得以改善的主要原因。

The composition of the electrodeposit was observed and analyzed by metallosope and SEM before and after corrosion. It was proved that the defects of the connecting rod coating is the main reason that weakens the corrosion resistance.

运用金相显微镜及扫描电镜观察腐蚀前后连杆的镀铬层组织，证实连杆的表面镀层缺陷是影响其耐腐蚀性的主要原因。

Discusses the main reason that causing the defaults of electroforming and the principle and methods that can improve the qualities of electroforming products.

本文从电铸电化学机理的角度探讨了导致电铸缺陷的主要原因和提高电铸品质的方法和原理，并以此为基础提出了数控喷射电铸。

Compared with the density of states of the alloying system, the increase of the structural stability of Mg-Al alloy with Sb or Bi additions attributes to an increase in the bonding electron numbers at lower energy level below Fermi level, which mainly originates from the contribution of the valence electron numbers of Mg, Mg, Al, Bi and Sb orbits.

电子态密度的分析结果进一步表明，Mg-Al系合金中相结构稳定性提高的主要原因在于：Sb、Bi合金化后，体系费米能级以下低能级区成键电子数的增多，其来源主要是Mg、Mg、Al、Bi和Sb的价电子。

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。