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In this paper, Lagrange function and a Hami quantity are used to develop the equation of motion for a non-inertial system in the presence of central force field.

采用拉格朗日函数与哈密顿量来讨论非惯性系统在有心力场存在时的运动方程。研究结果表明，这一方法远比通常方法简单、方便

Methods: Fresh saphena rings were sudied in organ chamber after incubating with Krebs-Henseleit bicarbonate solutions, FWM, KH with 0.1mmol/L NCR, FWM with 0.1mmol/L NCR at 37℃ for 1 hour. Precontraction induced by prostaglandin F2 (U4661930nmol/L) and endothelium-dependent relaxation induced by calcium ionophore A23187 l0^(-10~l0^(-6) mol/L were measured in the presence of indomethacin (7μmol/L) and LNNA (300μmol/L). Result: No significant changes were found in the 4 groups under the light microscope.

采用器官槽法研究在37℃有氧条件下用重碳酸盐缓冲液、含0.1mmol/L NCR的KH液、FWM液、含0.1mmol/L NCR的FWM液中浸泡血管环1h后，再用7μmol/L吲哚美辛和300 μmol/L N-硝基－L-精氨酸作用后，检测30 nmol/L U46619及不同浓度A23187引发的血管收缩舒张反应。

In other words, silicon powder and chloromethane are converted into a mixture of methyl chlorosilane in the presence of catalyst under pressure and heat, and then the intended fraction is separated by efficient fractionation.

产品主要以有机硅单体为原料，采用不同的聚合手段和工艺，添加各种填料和助剂制得。

Structures of Na~+-AD ion-complexes with 1 or 2 H2O molecules were obtained. It was found that H2O can bond with Na~+ in the structure of Na~+-AD to form Na-O van der Waals bond. H2O molecule can also bond with N or O atoms in AD moiety to form H-bonds as N-H…Ow or O…Hw-Ow. The former process takes place more easily. The most stable structures of Na~+-AD ion-complexes with 1 and 2 H2O molecules are W-C7AB and 2W-C7AB, respectively.αB conformer of Na~+-AD can not exist in the presence of 2 H2O molecules.

研究发现水分子可以结合在Na~+-AD络合离子中的Na~+附近形成Na-OW范德华键，也可以与Na~+-AD络合离子骨架结构中电负性较强的N或O原子结合形成N-H…OW或O…HW-OW氢键，相对而言，水分子更容易结合在Na~+-AD络合离子中的Na~+位置，Na~+-AD最稳定的带1个或2个水分子的结构分别为W-C7AB和2W-C7AB，Na~+-AD络合离子的αB构象在2分子水存在的情况下完全消失。

Would it be an unlicensed trespass of the imagination to conceive that on the night preceding the day of which you now commemorate the fiftieth anniversary--on the night preceding that thirtieth of April, 1789, when from the balcony of your city hall the chancellor of the State of New York administered to George Washington the solemn oath faithfully to execute the office of President of the United States, and to the best of his ability to preserve, protect, and defend the constitution of the United States--that in the visions of the night the guardian angel of the Father of our Country had appeared before him, in the venerated form of his mother, and, to cheer and encourage him in the performance of the momentous and solemn duties that he was about to assume, had delivered to him a suit of celestial armor--a helmet, consisting of the principles of piety, of justice, of honor, of benevolence, with which from his earliest infancy he had hitherto walked through life, in the presence of all his brethren; a spear, studded with the self- evident truths of the Declaration of Independence; a sword, the same with which he had led the armies of his country through the war of freedom to the summit of the triumphal arch of independence; a corselet and cuishes of long experience and habitual intercourse in peace and war with the world of mankind, his contemporaries of the human race, in all their stages of civilization; and, last of all, the Constitution of the United States, a shield, embossed by heavenly hands with the future history of his country?

是否会想象的无牌侵入的设想，在当晚的前一天你现在纪念成立五十周年-在当晚前的4月，1789年，第三十届时从您的市政厅阳台的校长纽约州管理的乔治华盛顿的庄严宣誓忠实地执行了美国总统的办公室，和他有能力保持最好，保护和捍卫美国宪法-，在愿景对我们国家的父亲晚上的守护天使出现在他面前了，在他母亲的尊敬形式，并以欢呼和鼓励的重大和庄严的职责，他对他承担的表现，已交付他西装天体装甲-头盔，虔诚的原则，正义，荣誉，仁爱，这从他与最早的婴儿，他至今走过的生命，他的所有兄弟的存在，组成； 1矛与自我独立宣言的真理镶嵌，剑，与他所带领的自由战争的独立凯旋门首脑会议的国家的军队一样，一个是胸衣和cuishes长期经验和在和平与人类世界的战争习惯性交，人类他同时代的，所有的文明阶段，以及最后的是，在美国，一个盾牌由天手饰的，宪法他的国家未来的历史？

It is not merely that we are in the presence of a different person—Defoe, Jane Austen, or Thomas Hardy—but that we are living in a different world.

它不是只我们在一个不同的人之前-Defoe ，珍奥斯汀或汤姆斯难的-但是我们住在一个不同的世界。

It is not merely that we are in the presence of a different person ── Defoe, Jane Austen , or Thomas Hardy ── but that we are living in a different world .

我们不仅是在不同的大师面前——笛福，简·奥斯汀或哈代，我们是生活在不同的世界。

In a method developed by Lemmerzahl, the extent of standard dextrin hydrolysis in the presence of flour extract is measured .

用Lemnerzahl所研究的方法中，可以测定面粉提取的标准糊精的水解程度。声音的响度可以测量。

In a method developed by Lemmerzahl, the extent of standard dextrin hydrolysis in the presence of flour extract is measured.

用Lemnerzahl所研究的方法中，可以测定面粉提取的标准糊精的水解程度。

In the presence of lipase, transesterification reaction of methyl stearate with glycerol was conducted in an organic solvent. Monoglyderide was obtained with a conversion reaching 60% while suppressing formation of diglyceride under 2%.

脂酶存在下，在有机溶剂中进行甘油和硬脂酸甲酯的酯交换反应，以60%以上的转换率合成出单酸甘油酯，而甘油二酯的生成率抑制在2%以下。

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。