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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 relations of inducing skin current of shielding layer, core voltage and core current with the environment field were obtained. The change of shield layer current wave with grounding state of external shield and core voltage with loading resistance was analyzed. According to the dependence of shield layer current oscillating frequency on electromagnetic wave propagation velocity, conception of transporting line of shield layer-ground with equivalent relative dielectric constant was presented. fited equation of equivalent relative dielectric constant with change of cable height was given.

试验得到九芯电缆屏蔽层感应电流、芯线感应电压、芯线感应电流以及环境场之间的关系；分析了皮电流波形随外皮接地状态的变化，芯电压随负载电阻的变化；基于皮电流振荡频率与电磁波传播速度的关系，提出了屏蔽层-大地"传输线"等效相对介电常数概念，给出了等效相对介电常数随电缆高度变化的拟合式；皮电流计算与测量结果在波形、振荡周期、衰减规律等方面有较好的一致性。

I have recently read a book in English Intermediate grammar, part of which is the relative pronoun and the clause about, I just learned about 70%, but I heard relative pronoun can be omitted, which that when where this kind, and ...

我最近看了一本英语中级语法的书，里面的一部分内容是讲关系代名词和从句，我刚学会了大约70%，但又听说关系代名词可以省略的，which that when where 这类的，而且。。。

The results show that the inverse calculation errors are remarkable, and the relative error of emissivity parameter is larger than the relative error of temperature.

结果表明，发射率参数的计算相对误差要远远大于温度的相对误差。

Although many general results in K〓 and relative K〓 theory have been obtained, the determination of structure and the computation of K〓 groups and relative K〓 groups are very difficult.

对于K〓群及相对K〓理论的一般性研究也已取得了较多的成果，但是K〓群及相对K〓群结构的确定和计算却比较困难。

Keyboard code location relative speed equivalence; Returning to one for minimum value; Time relative value.

关键字］键位相关速度当量；最小值归一；时间相对值

Linear features Linearity and the relative stroke linear relationship between the relative flow.

线性特性线性特性的相对行程和相对流量成直线关系。

Balancing valve is a special feature of the valve, it has good flow control characteristics, the relative flow and a linear relationship between the relative opening.

平衡阀是一种特殊功能的阀门，它具有良好的流量调节特性，相对流量与相对开度呈线性关系。

The structural and mechanical properties of ring-spun yarn have been studied comprehensively. The relationships between yarn linear density, yarn twist, and the relative yarn structural and mechanical properties have been obtained. Through statistical analysis of yarn linear density, twist, and strength of 200 groups of pure cotton yarn, and considering some influence factors, such as carded or comed, application of long-staple cotton, experiential functions of yarn relative strength with yarn linear density and twist have been obtained.

对环锭纱结构力学性能进行系统研究，得出环锭纱的相关力学性能参数与纱线线密度和捻度的关系；通过对从工厂收集的200组纯棉纱线线密度、捻度、强力等数据的统计分析，并综合考虑纱线线密度、是否精梳、是否使用长绒棉等因素，得出了线密度和捻度与纱线强力相对值的经验函数关系。

The occurrences, relative abundance, relative density, most common and longest SSRs in the three species were analyzed and compared with each other. The results revealed that the SSRs number in B. japonicum, M. loti and S. meliloti genomes were 1410, 859 and 638, respectively. In the three genomes, tetra-, penta-and hexa-nucleotide repeats were more abundant, indicating higher mutation rates in these species.

大豆慢生根瘤菌、百脉根根瘤菌和苜蓿中华根瘤菌基因组中的SSRs分别为1410个、859个和638个，3种根瘤菌基因组中长重复的四、五、六核苷酸基序更为丰富，变异性更高。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。