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Primarily a jurist, an expert in Greek, a first-rate authority on Roman authors, an historian, and a poet, he nevertheless attained his chief renown through his philosophical and Hebrew works -- especially through his "Rudimenta Hebraica"-- in the composition of which he secured the assistance of Jewish scholars.

主要是法学家，一位专家在希腊，一流的权威的罗马作家，历史学家和诗人，但他实现他的首席通过他的著名哲学和希伯来文的作品-尤其是通过他的& R udimentaH ebraica&-组成的，他担保的协助下，犹太学者。

During preparation, mercapto ethanol isooctanoate, alkyl or ester tin chloride and organic solvent are first heated and refluxed while adding catalyst; organic layer is then obtained through separating liquid and decompression distilled; and through further steps, the compound is obtained. The synthesis process of the present invention is simple, and has conversion rate higher than 95 %, normal pressure and low reaction temperature, low power consumption and less pollution, and the prepared compound has high reaction activity and low toxicity.

制备时，将异辛酸巯基乙醇酯、烷基或酯基氯化锡和有机溶剂加热回流，同时加入催化剂，然后通过分液，保留有机层，再对有机层进行减压蒸等步骤制得所述化合物；本发明合成工艺简单，转化率大于95％，反应在常压条件下，反应温度低，从而降低了能耗，减少了污染，所制备的化合物具有反应活性高和毒性小的特点，使用安全。

Through a variety of resin filter, adsorption and elution conditions for the optimization, as well as decolorization, crystallization methods of research, this article eventually determine the strong acid cation resin HZ-001 which is at pH 3, 3BV / h, having the largest adsorption to the tryptophan; the fermentation broth were centrifuged to remove sediment,then treated with activated carbon to be decolored and then treated with strong acid cation resin HZ-001. After that,2mol/l amino acid were passed through the HZ-001 ion exchanging column,kept almost constants when the flow rate stayed 6 BV / h. At 60℃,it was condensed into the saturated state and then added Ethanol until its percentage reaching 30%. At 4 ℃ under 100rpm placed in the shaker 20h, the collection of L-tryptophan was dried up in vacuo.

本文通过对种树脂的筛选、吸附和洗脱条件的优化，以及对脱色、结晶方法的研究与摸索，最终确定强酸型阳离子树脂HZ-001在pH=3，3倍床体积流速，温度室温，对色氨酸有最大的吸附作用；将发酵液离心去沉淀并用活性炭脱色后通过HZ-001强酸型阳离子交换树脂柱，再用2mol/L的氨水6倍床体积流速在室温下进行洗脱，收集洗脱液，60℃浓缩为过饱和状态后加入30%无水乙醇，4℃下100rpm摇起晶20h，过滤搜集结晶并真空干燥得白色粉片状L-色氨酸晶体。

Zhao Xijun, the deputy chairman of Financial School of Renming University of China, thinks that though to see through America's manipulation of foreign exchange rate is a little bit difficult, it is obvious that America intends to promote its exports through devaluating US dollars.

中国人民大学财政金融学院副院长赵锡军认为，虽然要认清美国操纵汇率是一个比较复杂的问题，但从目前的情况来看，美国通过使美元低估来刺激出口的目的是比较明显的。

The main reason is that many high-grade office space is equipped with all-air central air conditioning, is to first deal with air, reducing temperature and humidity, the air sent through the pipeline to the room through the return air, pipeline to return to the central processing system, central processing system for cooling air return after降湿part of the new wind coupled with the second round after the blast, and so the cycle, while the central air-conditioning system for energy conservation, often adding a little fresh air, return air devices in the recovery rate of 80%, resulting in cross-infection the opportunity to increase significantly.

主要的原因是，许多高品位的办公空间配备了全空气中央空调，是先处理空气，降低温度和湿度，空气通过管道传送到房间通过回风管道返回中央处理系统，中央处理系统，冷却空气降湿后返回的一部分，新风，加上第二轮爆炸后，所以周期，而中央空调系统节能，往往增加了小新鲜空气，回风装置，回收率为80 ％，导致交叉感染的机会大大增加。

The hydrogen solubility in Pd follows Sieverts law, and hydrogen diffusion through the bulk of the palladium membrane is the rate determining step. Whereas other gases only permeate through the pinholes or gaps in the Pd layer;the permeation can be quantitatively described as a combination of Knudsen diffusion and viscous flow.

氢气在钯膜中溶解渗透服从Sievert定律，并且氢的渗透扩散过程是速率控制步骤；而其他气体则通过膜中的针孔或裂隙进行扩散，其传质过程为Knudsen扩散和粘性流两种传递方式的综和。

At first, the rought C〓F〓 mixed gases are obtained by pyrolysis process of R22. A experimental pyrolysis device is designed and made by ourself. The optimum operating conditions are offered in the paper. Secondly, the much efforts is on the synthesis of R134. After through the discussion of basic thermodynamics and kinetics, selecting and preparating catalyst, it is possible that the synthesis of R134 by pyrolyzed gases hydrogenation. Base on the character of catalytic process, the kinetics equation about C〓F〓 catalytic hydrogenation is established. The rate constant of the reaction is obtained through experiment data regression. In order to achieve higher yield of R134, some optimum technological conditions is determined.

论文首先对R22裂解制成四氟乙烯混合原料气的裂解过程进行了讨论，自行设计和制作裂解反应装置，并确定裂解反应的最佳操作条件；然后，重点对R134的合成进行基础研究，分别从热力学和动力学的角度探讨以含四氟乙烯的R22裂解混合气为原料合成R134这一全新工艺的可能性，选择和制备加氢催化剂，根据催化过程特点建立四氟乙烯催化加氢反应的总包动力学方程，并在此基础上自行设计和制作中试合成装置，获得了以裂解混合气为原料合成R134的最佳工艺条件，为R134的工业化生产提供了必要的理论依据和实验基础。

Yet still, after much wandering through Africa in the last few years, I rate this as the most exciting encounter that has come my way; and I remember how, no longer any need for silence, the guides with their pangas slashed a path for us to return through the bush, and how they grinned and were pleased because we were pleased, and how I went down the mountain like a young gazelle in two hours straight, never a touch of fatigue, never a thought for my blistered feet after such a happy day.

然而在过去的几年里走遍非洲许多地方之后，我仍认为这是我经历过的最激动人心的一次遭遇；我仍记得当已经不需要再保持寂静时，向导们怎样用他们的大砍刀给我们砍开一条小路好让我们穿过灌木丛回去，他们怎样因为我们高兴而高兴地咧嘴笑着，以及我怎样像只幼小的瞪羚那样两个小时一口气就下了山，在过了这样快活的一天以后，一丝疲劳也没有，一点也没有想到我那两只打了泡的脚。

Ammonia volatilization in relation to N application rate and climate factors was studies through field experiment in red soil under the crop rotation of Smooth Crabgrass in spring and Winter Radish in autumn Results indicate that ammonia volatilization in Treatments N90, N160 and N230 in spring dragged on for 10~17 days, and peaked at the 6th~8th day after urea application, reaching N0.11, 0.57 and 1.84kg hm^(-2)d^(-1), respectively, and the total amount of N loss through ammonia volatilization was N0.67~5.16kg hm^(-2) accounting for 0.74%~2.24% of the total N applied.

通过红壤旱地种植牧草马唐和蔬菜冬萝卜轮作试验，研究了在春秋二季红壤旱地氨挥发对不同施氮量和气象因子的响应。结果表明，红壤旱地春季牧草实验，氮肥处理N90、M60和N230，氨挥发持续10~17d，在施肥后6~8d达到峰值，峰值分别为N0.11、0.57和l.84kg hm^(-2)d^(-1)。

The total amount of N loss through ammonia volatilization was N 0.37~3.04kg hm^(-2), accounting for1.31%~3.69% of the total N applied to Winter Radish The total N loss through ammonia volatilization enhanced with the increase in N application rate (p.05) and ex-pressed as y=0.1576e(superscript 0.0146x) and y=0.1826e(superscript 0.0112x) respectively.

不同施氮处理，春季累计氨挥发量为N0.67~5.16kg hm^(-2)，占施入肥料N的0.74%~2.24%；秋季累计氨挥发量为N0.37kg~3.04kg hm^(-2)，占施入肥料N的1.31%~3.69%。红壤旱地春秋二季氨挥发量均随施N量的提高而指数递增，其关系式分别为：y=0.1576e(上标 0.0146x)和y=0.1826e(上标 0.0112x)。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。