结晶

Themain contents of this dissertation are as follows:(1) The quality analytiedal results of chitosan are as follows: water for 15.205%;degree of deacetylation 92.671%; the weight average relative molecular weight ofchitosan 195900; the viscosity average relative molecular weight of chitosan 194100;and the decomposing temperature 298℃. The infrared ray IR spectra of chitosanshows that the feature-absorbing band of chitosan amido was 1601cm~(-1), that ofβ-indican bond was 986cm~(-1). The results of the X-ray diffraction of chitosan indicatesthat its degree of deacetylation and degree of crystal are both big.

本文的主要内容如下：(1)对壳聚糖的质量进行分析，其水份为15.205％，脱乙酰度为92.671％，重均分子量为195900，黏均分子量为194100，分解温度为298℃，壳聚糖的红外光谱表明，壳聚糖—NH_2的特征吸收峰为1601cm~(-1)，β-糖苷键的特征吸收峰为986cm~(-1)，壳聚糖的X-衍射图表明壳聚糖原料的脱乙酰度和结晶度均较大。

The metastable state of dilution of spectinomycin has been studied by both induction period method and direct method.

采用诱导期法和直接法研究了大观霉素溶析结晶的介稳态。

The rule of magnetic induction density, induced eddy current and electromagnetic force varied with high frequency sine exciting current was investigated.

利用瞬态分析方法，研究高频正弦激励电流密度在结晶器内钢液中产生的磁感应强度、感应电流及电磁力的变化规律。

The prosperity of Vancouver, to which many ethnic groups have contributed, is the crystallization of its people's wisdom and industriousness.

温哥华的辉煌是温哥华人智慧和勤奋的结晶，其中包括多民族的贡献。

Owing to phosphorous acid is produced from phosphorus trichloride in industry by hydrolysts, inspissation and crystallization, if we use phosphorus trichloride directly on synthesize N- iminodiacetic acid, not only can simplify operation, but also can red.

原工艺采用的是在酸性条件下高温时将甲醛滴加到亚磷酸与亚氨基二乙酸一钠盐混合溶液中进行反应，考虑到工业上亚磷酸的合成一般采用三氯化磷水解、提浓、结晶制得，直接将三氯化磷用于双甘膦的合成，不仅可以简化操作过程，而且对于降低生产成本和能耗有明显意义。

Originally techniques dropped formaldehyde into the mixture of phosphorous acid and monosodium of imino diacetic acid in high temperature. Owing to phosphorous acid is produced from phosphorus trichloride in industry by hydrolysis, inspissation and crystallization, if we use phosphoros trichloride directly on synthesize N- iminodiacetic acid, not only can simplify operation, but also can reduce the cost and save energy.

原工艺采用的是在酸性条件下高温时将甲醛滴加到亚磷酸与亚氨基二乙酸一钠盐混合溶液中进行反应，考虑到工业上亚磷酸的合成一般采用三氯化磷水解、提浓、结晶制得，直接将三氯化磷用于双甘膦的合成，不仅可以简化操作过程，而且对于降低生产成本和能耗有明显意义。

Idioms are the essence of the language and are the achievements of peoples' intellection.

成语( фразеологизм)是人民思想的结晶，是语言中的精华。

The interatomic potential for Al-Mg alloys is different from the others used in the paper. Although it is the EAM type formalism of many-body potential, the functions of this potential are not analytical forms. The functions are described by a numerical set of points, whose values are the parameters to be optimized.

非晶态Ni〓Al加热至晶态结构需要比结晶更慢的加热速率，当加热速率较大时，得到了bcc型结构占有较大比例的结构，这可能是Ni〓Al的一种亚稳结构；当加热速率较小时，可以获得部分有序L1〓结构晶体，不过晶体中仍有少量hcp型结构存在。

Nevertheless, the problem that the interdiffusion between ferroelectric thin films and substrate, as well as the ill-crystalization of interface, which results in the decreasing of the ferroelectric properties, remain to be solved.

对于薄膜，在较低的温度甚至室温下就可能发生显著的反应或互扩散。然而，在铁电薄膜／衬底间的互扩散和界面的结晶膜不好导致铁电体性能下降的问题一直未能得到很好的解决。

However, POM/PEO interfibrillar segregation and the interspherilute segregation crystalline structures seem unfavourable for the toughness of the blends.5. PEO can improve the friction and wear properties of POM/PEO blends because PEO in the blend melts during friction and transfers to the friction surface, forming a lubricative layer.

磨痕宽度则先减小后增加，这是因为随PEO含量增加，其结晶结构发生了变化，无定形PEO与POM微纤晶穿插有利于减小磨痕宽度。6。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。