难

Novel chitosan derivative with long alky groups as the hydrophobic moieties and carboxymethyl groups as the hydrophilic moieties was synthesized. The chemical structure of N-octyl-O, N-carboxymethyl chitosan was characterized via FTIR, 1H NMR and elemental analysis. The physical properties were analyzed with wide angle X-ray diffraction and differential scanning calorimetry.

以天然可生物降解的壳聚糖为原料，通过在壳聚糖6位羟基上引入羧甲基，在2位氨基上引入疏水烷基链，制得N-辛基－O，N-羧甲基壳聚糖两亲性衍生物，分别用FTIR、1H NMR和元素分析等技术对其结构进行表征，用广角X射线衍射和差示扫描量热法对具物理性质进行分析，并考察其在各种溶剂中的溶解性能及其对难溶性药物的增溶能力。

Interlayer spacings of all the alkylamine intercalates are linearly proportional to their alkyl chain lengths.

十二胺和十六胺嵌入较难，得到的嵌入物结构不规整，代表层状结构的(001)峰不对称。

Ask: Hui catfish inferior does emperor of alkyne of Yu of ?

问：不做友情链接，百度不是，难收录了吗？

It's hard to experience it all in one visit.

它的经验都很难在一个访问。

It is hard to do good all one's life.

一个人很难一辈子做好事。

All things considered, I find it hard to see how such rules can be justified in terms of safety.

所有的事情考虑，我觉得很难，看看如何这样的规则可以在合理的安全程度而言。

Want to do website of a classification to stand originally, but to us this network is returned is not very all-pervading city, it is very difficult to be done.

本来是想做一个分类信息网站的，但是对于我们这个网络还不是很普及的城市，做起来很难。

However,"JueLanCaiWei" still conveys a multiple meaning more extensive than "Absorption" in terms of learning or studying. Zubin's paintings tell what is regarded by him as an empirical or traditional existence has formed a kind of rhetoric to his paintings, for example, a restrained cynicism of the Ming and Qing Dynasty and even the times of the Republic of China or some conceits conjured upon a primitive thinking mode. No matter which it may be, the understanding of "symbolism" and "allegory" frankly shown by Zubin himself is more his interest in some particular drawing method than the outcome of "plucking" the fruitful tradition. Although he delightfully demonstrates an impressive charm of the traditional language indeed, the symbolic or allegoric meaning of his paintings depends not on the language itself but on some inexpressible secrets in his view of life by means of images.

不过， 作为学习立场的表述，"嚼兰采薇"依旧隐约传达出比"吸收"更大的多义性，祖斌的画作证实：那些被他视作经验或传统的存在，已然构成自己作品图式的某些修辞，譬如一种婉约的明清甚至民国时代的玩世情调，或者部分以原始思维模式臆造的奇思妙想，但无论前者或后者，祖斌所坦言的关于"象征"和"寓意"的理解与其说是他咀嚼或采摘的结果，不如说是他感兴趣的图绘手法，尽管他的确津津有味地在作品中展示了那些令人回味的有关传统语汇的魅力，但其作品的象征性和寓意并不取决于语汇自身所指，而是用图像看待生活时许多令他自己也欲辩难言的隐秘所在。

Ambrose and St. Augustine in their beautiful works on the Psalms rather spiritualize, or moralize, than allegorize, and their imaginative interpretations are chiefly of events, actions, numbers, etc. But almost all allegorical interpretation is so arbitrary and depends so much on the caprice of the exegete that it is difficult to conciliate it with reverence, however one may he dazzled by the beauty of much of it.

刘汉铨和圣奥古斯丁在其美丽的作品的诗篇，而spiritualize ，或说教，而不是allegorize ，他们的想像力的解释是主要的事件，行动，数字等，但几乎所有的寓言是这样的解释，而且取决於任意这麼多的任性的exegete ，这是很难调解与崇敬，但是人们可以通过他眼花缭乱的美丽多了。

At the same time, mature sheath still have the capacity of Cl~--exclusion.2 Alleviative effect of exogenous substance under salt stressThe salt tolerance of plant is a integrative mechanism, its fit to salt stress was multifarious, the salt tolerance of crop is a kind of complicated physiological mechanism that is the acted together result of genetic characteristic and exoteric condition, the alleviative effect on salt stress caused by exogenous substance was realize through different approach, so it is very difficult to explain the relation of exogenous substance and salt tolerance with a given index.

成熟叶叶鞘同时还具有拒Cl~-能力。2外源物质对盐胁迫的缓解作用植物的耐盐性是一种综合机制，其对盐胁迫的适应也是多种多样的，作物的耐盐性是一种相当复杂的生理功能，是遗传特性与外界环境共同作用的结果，不同的外源物质对盐胁迫的缓解作用是通过不同途径实现的，因而很难用某一个指标来说明外源物质与耐盐性的关系。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。