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The main collagens in skin are type I and III. In this research, total collagens were separated from rat skin by enzymatic digest and acetum methods. The collagens were denatured at 60℃ and digested with trypsin. Characteristic peptides typical for collagen type I and III were identified with high performance liquid chromatography/mass spectrometry.

哺乳动物皮肤真皮中胶原蛋白含量约为70%，主要为是I型、III型胶原蛋白，本实验利用稀酸溶解和酶法提取了大鼠皮肤中的总胶原蛋白，将胶原蛋白粗提品在60℃变性后用胰蛋白酶进行降解，液相色谱/质谱联用法分析了两种胶原蛋白的特征多肽，利用特征多肽比较了不同生长期大鼠皮肤中I型和III型胶原蛋白相对含量。

For in this Achaemenid inscriptions there is absolutely no trace of the dualism which is the characteristic and all-prevailing feature of the Avesta, and no allusion whatever to the great prophet Zoroaster, or the revelation of which he was the mouthpiece.

因为在这个阿契美尼德题词是绝对没有痕迹的是二元的特点和所有普遍的特点，阿维斯塔，并没有提及任何的伟大先知Zoroaster ，或启示了他的喉舌。

Different type idioplasm resources paddy rice adult plant character and paddy rice quality character overall outlineThe birth characteristic, adult plant shape, ear of character of idioplasm resources agronomic characters have the extremely remarkable difference, like weight of a thousand seeds change in 19.67-40.9g, in 18 kind of hull color by brown yellow variety most, in 9 kind of awn colors are most by the achromatic color.

不同类型种质资源水稻植株性状及稻米品质性状的总体概述种质资源水稻的生育特性、植株形态、穗部性状等农艺性状均具有极显著的差异性，如千粒重变化在19.67-40.9g，18种颖壳色中以褐斑黄色样本数最多，9种稃尖色中以无色最多。

As for the compensator,it is characteristic of convenient adjustment, big adjusting range and high degree of accuracy. The theory and experiment show that the most important feature of this composite compensator is its achromaticity in a certain spectral range.

本文在复合式补偿器研究基础上，进一步从理论和实验上证明了该补偿器不仅具有相位补偿性能，而且在一定的光谱范围内满足消色差性能，削弱了延迟量对波长的依赖关系，适合于复色光使用。

Product characteristic: Have an effect to help skin reach maximal penetration and the acidification effect in short time.

产品特点：有效帮助肌肤于短时间内达到最大渗透及酸化的效果。

The product has the Characteristic of antisepsis, antibiosis, acidproof and alkaliproof, heat prevent, and insulation, etc.

具有良好的防腐、耐酸碱、抗静电、抗菌及隔热绝缘等性能。

Water-based ink system deoxypentose characteristic、 it is mixed, acidproof anti－alkali, the size of the expansion rate, and so on to after the ceramics firing on the decoration of the differences in graphics and text to the sample.

火性不朱编制介质的不合子不解构共性、是否便当搀和、耐酸耐碱性、伸缩率不小小等等都潮系到烧不败之后陶瓷上表现不入的点缀图文与样品的不对别。

Based on the acoustic absorption theory of microperforated panel and by the means of the theoretical analysis and emulation, the paper focuses on the acoustic characteristic including acoustic impedance, frequency and acoustic absorption coefficient of microperrforated panel working in the combustion chamber which has high temperature and great temperature gradient.

摘要根据微穿孔板吸声理论，采用理论分析和仿真的方法，着重讨论微穿孔板在温度梯度下的声阻抗、共振频率和吸声系数等声学特性，分析其受温度影响变化的机理。

Using transfer matrix method to analyze microperforated panel absorber s acoustic characteristic;2. The possibility and the significance of replacing fibred absorption materials by fibreless materials,especially by microperforated panels,are discussed.

简要地介绍了吸声材料的基本特点，阐述了无纤维性吸声材料（特别是微穿孔板吸声结构）取代传统的纤维性吸声材料的可能性及其重要意义，较详细地介绍了近年来德国以及我国科研人员在无纤维吸声材料研究上所取得的进展。

The versatile characteristic of the platform offers cost saving for acquisition, while improving safety and availability.

平台的通用特性节省了采购成本，同时提高了安全性和可用性。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。