难以

Especially the most commonly used methods,such as coupling reagent,surfactant and polymer coating methods were introduced in detail.On these basis,the problems existed were put forwarded and the necessity of interface compatibility improvement,the uniform dispersedness of nano-particles in base material and stability control were pointed out.At the same time,further research direction was also proposed.

未经表面处理的纳米TiO2颗粒表面还具有亲水性，不能很好地分散在有机基质中，这大大降低了超细颗粒的实际应用效果；同时在有机高分子树脂中难以均匀分散，界面上会出现空隙，当空气中的水分进入空隙中就会引起界面高聚物的降解、脆化，导致材料性能下降。

The ideas of the latter sort are the more difficult to displace.

后者的想法是比较难以取代的。

Relevant academic achievements are in eager demand and the lack of academic achievements is in disproportion with the demand by the fast development of China's venture capital market.

理论的缺乏难以指导实践，不适应我国风险投资的快速发展对相关研究的要求。

Through myriad techniques and observations, cosmologists have recently arrived, after decades of strife, at a robust but dark consensus regarding a cosmos in which stars and galaxies, as well as the humans who gawk at them, amount to barely more than a disputatious froth.

宇宙学家们在近十年间通过难以数计的探测和观测，于近日在宇宙星辰和作为观察者的人类等的问题上达成了一个虽然够一致但是不容乐观的共识。

"I'm afraid I will have to disqualify myself from this honorable task," relied Jane.

"我恐怕将难以胜任这项光荣的使命。"

In theoretical circle there are many controversies about the legal attribute of virtual property . In the judicial practice the dissention with virtual property could not be settled satisfactorily because the related law is absent.

在理论界对虚拟财产的法律属性存在诸多争议，而在司法实践中由于相关法律的缺位，导致了虚拟财产纠纷难以得到很好地解决。

This unique viewpoint has developed over time as his experience as a cultural nomad has broadened. His nomadic artistic style is diametrically opposed to an orthodox style of mainline art. His style is in a constant state of dissociation with no borders, no controls, and no limitations.

他的这种泛亚洲视点是基于个人像一个文化游牧者的经验，因为游牧性的艺术是与正统的、主流的艺术相对立的，它处于一个没有边界的游离状态，是不确定的，是没法被编制的，是难以约束的，它不断摧毁确定的边界。

Its policymakers and economists are, of course, united in their distaste for America's tariff talk.

当然，决策者们和经济学家们都对美国的关税政策难以认同。

Love is the distillation of life, the summit of life hard to reach.

爱情是生活的升华，是难以攀登的人生的绝顶。

Neural network-based face distinguishment Human face is a kind of special pattern and has variances in size, location, rotation and distribution in facial features.

基于神经网络的人脸判别人脸是一种特殊的图象模式，在不同的人脸图象中，人脸在大小、位置、旋转角度、侧转程度、五官分布等许多方面存在着差异，难以用传统的神经网络分类方法加以判别。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。