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After analyzing natural factors and human activities, the paper considers the following as main reasons for soil degradation of the source regions of the Yellow River: a natural conditions, climate arid, precipitation decrease, bad soil condition and rich sand source; b human factors, overgrazing, destructive felling, irrational grazing system, wild animals battue, and so on.

在综合分析自然因素和人为活动后，本文认为气候干旱、降水减少、土壤条件差、沙源丰富等自然条件和超载放牧、乱挖滥采、放牧制度不合理、大量捕杀野生动物等人为因素是造成黄河河源区土地退化的主要原因。

The optimal carbon source and nitrogen source were also determined as 20 g/L glucose, 15 g/L tryptone and 5 g/L beef extract, respectively.

经过对产酶条件的优化，确定最佳摇瓶产酶条件为：葡萄糖20 g/L，蛋白胨15 g/L，牛肉膏5 g/L，玉米浆15 g/L， KH2PO4 3 g/L， MgSO4·7H2O 0.5 g/L，初始pH 7.0，培养温度37℃，装液量20 mL/250 mL三角瓶，摇床转速200 r/min。

The activity of enzyme production of bacteria from the soil samples that from oil refinery was higher, and the best carbon source for bacteria fermenting and producing lipase was sucrose, and the best nitrogen source was beef extract.

结论］炼油厂土样中细菌的产酶活性较高，细菌发酵产脂肪酶的最佳碳源为蔗糖，最佳氮源为牛肉膏。

The experiment optimized the culture medium and conditions for PV 1 to yield the highest GABA: sucrose as carbon source,peptone and beef extract as complex nitrogen source,initial pH at 7.0,temperature at 30~34 ℃.The content of GABA was over 4 g/L in the optimum culture conditions.Thereby,i...

实验还对酸菜1号菌株的培养基和培养条件进行了优化：用蔗糖为碳源、蛋白胨和牛肉膏作为复合氮源、培养基初始pH为6.0、培养温度为30~34℃时该菌株发酵产GABA的量最多，发酵过程中的振荡培养(100 r/min)和静置培养对GABA的产量无明显影响；在最佳培养基组合和发酵条件下，发酵液中GABA含量可达4 g/L以上，表明利用乳酸菌进行富含GABA食品的生产是可行的。

The birefraction filter is also designed to get satisfying output-parameters. At last, the Ti:sapphire laser with flat-flat resonant cavity is pumped with the pumping source at 532nm. The pumping source is got from the frequency doubling of Nd:YAG laser.

对调谐元双折射滤光片进行了设计，采用厚度比为1：2：10的三片组合型双折射滤光片，最薄晶片厚度d 1 = 0.45mm，光轴与滤光片法线方向呈90度角，以使系统的输出参数达到预期的要求。

If the source address is not formed from the 64 bit prefix, the source address shall be wildcarded.

如果来源住址从 64 一点点没被形成前缀，来源住址将被取代字符。

The paper's research content is uses series DSP of Blackfin's characteristic such as high performance, low power dissipation, support dynamic power source management and the embedded Linux's characteristic such as the open source code, the little system kernel, the entire network structure in the kernel code, establishes a high speed embedded digital home system platform based on Blackfin.

本论文的研究内容是利用Blackfin系列DSP处理器的高性能、低功耗、支持动态电源管理等特点以及嵌入式Linux开放源代码、系统内核小、内核网络结构完整等突出特点，建立一个高速的基于Blackfin的嵌入式数字家庭系统平台。

The source-initiation unit in the case of an explosive source is likely to be an electric blaster.

震源的起震装置，在爆炸震源的情况下，可能是一个爆炸机。

Coolest message board, a lot of my reference source code Rees himself after careful study, prepared by a source.

最酷的留言板，使我参考好多里斯源代码后又经过自己的悉心钻研，编写的一部源代码。

Borage is an excellent source of vitamin C, vitamin A, Potassium, and iron; it is also a good source of magnesium and contains riboflavin, calcium, and phosphorus.

琉璃苣是维生素 C 、维生素 A 、钾，和铁的一个极好的来源；它也是镁的一个良好的来源并且包含核黄素、钙、和磷。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。