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3M i τi = 2 a i bi 3M i k = Ga i b i3 由后一式得 Gka i b i3 Mi = 3 60 Also Gk M =∑Mi = 3 i a i bi3 ∑ So we have: M a i b i3 = M 3 ∑ a ibi i Consequently we have:τ 3 Mb i = a i b i3 ∑ 3M k = G ∑ a i b i3 It is noticeable that: the shear stress of the midpoint of the long side of the narrow rectangle is considerably precise.

而 故有 Gk M =∑Mi = 3 M i a i bi3 ∑ a i b i3 = M 3 ∑ a ibi 从而有τ i 3 Mb i = a i b i3 ∑ 3M G ∑ a i b i3 k =值得注意的是：由上述公式给出的狭矩形长边中点的剪应力已相当精确，然而，由于应力集中的存在，两个狭矩形的连接处，可能存在远大于此的局部剪应力。

Results show that 4-oxo-β-ionone is the major product with yield of 53.5% under the conditions as follows: reaction temperature 45℃, reaction time 24 h, the molar ratio of n: n(NaClO3): n 20: 100: 3, and pH value of solution in 1-3; on the other hand, 5,6-epoxy-β-ionone is major product with yield of 25.4% when reaction temperature is 40℃, reaction time is 24 h, the molar ratio of n: n(NaClO3): n is 20: 120: 5, and pH values of solution is 3. The excessive β-ionone can be recovered by vacuum distillation for reusing again. 4-oxo-β-ionone and 5,6-epoxy-3-ionone were purified by recrystallization and silica gel column chromatograph respectively with the purity over 98%.

研究结果表明：氯酸钠氧化β-紫罗兰酮的反应主要生成4-氧代－β-紫罗兰酮和5，6-环氧－β-紫罗兰酮，经重结晶和硅胶柱层析分离，纯度高于98%；4-氧代－β-紫罗兰酮的有利合成条件是反应温度为45℃，反应时间为24h，溶液的pH值为1~3，反应物配比n：n(NaClO3)：n为20：100：3，最佳收率为53.5%；5，6-环氧－β-紫罗兰酮有利的合成条件是反应温度为40℃，反应时间为24h，溶液的pH值为3，反应物配比n：n(NaClO3)：n为20：120：5，其收率为25.4%；未反应的β-紫罗兰酮经减压蒸馏回收后可重复使用。

They are:3#,5#nylon style,3#,4#concealed style.3#,4#knop style and other styles of productions which are made by nylon core.core thread.real copper,ersatz copper small colophony tooth.big colophony tooth,diamond and concealed style.

本公司现生产各类：3#，5#尼龙码庄，3#，4#有芯码庄，3#，4#隐形码庄。3#，4#蕾丝码庄及各型号尼龙，有芯，隐形，芯丝，真铜，仿铜，树脂细齿，树脂粗齿，钻石的成品拉链。

Spikelets with 1 floret (very rarely 2), rachilla disarticulating above glumes, with penicillate extension lying against the palea; glumes subequal, usually slightly longer than the floret, rarely slightly shorter, membranous, 1–3-veined, apex acute or acuminate; floret callus bearded, hairs usually 1/3 as long up to about equaling floret; lemma thinly to firmly membranous,(3–)5-veined, dorsally awned or awnless, apex erose, denticulate or 2–4-toothed; awn geniculate or straight, its position varying from near base to near apex, usually inconspicuous, up to twice length of lemma but occasionally reduced to a subapical mucro or absent; palea 2/3 as long to subequaling lemma.

小穗具1小花(极少2)，高于颖片，具具毛撮的扩展对内稃躺脱节的小穗轴；通常，近等长的颖片稍长于那些小花，很少稍短，膜质，脉，先端锐尖或渐尖；作为长的可达的通常的公然反对的小花结茧，头发1/3大约等于小花；稀疏外稃到坚定膜，(3-)5－脉，背具芒或者啮蚀状的顶，或者2-4齿状的具小齿，awnless；芒膝曲或者直，作为近相等外稃的长时期的内稃2/3。

During the manufacturing of the critical intermediate cephalosporin nucleus --7-amino-3-chloro-cephalosporanic acid diphenylmethyl ester hydrochloride salt, first the feasibility of the one-pot synthetic route of open loop, closed loop and ozonization when chlorine is passed over is qualified by experiments. Then the critical factors that will influence this reaction are studied as follows: the mol ratio of triphenyl phosphite and Diphenylmethyl 3-hydroxy-7-phenylacetaminoceph-3-em-4-carboxylate-l-oxide is four to one; the quantity of the stablizer should be at least more than two to one. The temperature of the system must be 25℃ when chlorine is passed over so that the hydrochloride can be precipitated to obtain cephalosporin nucleus of cefaclor--7-amino-3-chloro-cephalosporanic acid diphenylmethyl ester hydrochloride salt.

在制备关键中间体头孢母核7-氨基-3-氯头孢烷酸二苯甲酯盐酸盐时，先通过实验验证把开环、闭环、臭氧化三步在通入氯气时并为一锅煮的合成路线的可行性之外，又研究了影响该反应的几个重要因素：亚磷酸三苯酯与3-羟基-7-头孢烷-5-亚砜-2-甲酸二苯甲酯的摩尔比为4：1；稳定剂2-甲基-2-丁烯的用量至少大于2：1，通入氯化氢气体时体系温度在25℃时盐酸盐则能够顺利析出，获得头孢克洛的头孢母核—7-氨基-3-氯头孢烷酸二苯甲酯盐酸盐。

In order to find active pesticide leading compounds, thinking about that triazolothiadiazoles had various biological activities, this paper designed and synthesized 11 novel title compounds from 3-substituted-4-amino-5-mercapto-1,2,4-triazoles with heterocyclic carboxylic acid via cyclization in the presence of phosphoryl chloride by the princple of combination of active strucural moieties. The structures of the title compounds were characterized by melting point, IR, 1HNMR and elemental analysis.

为了寻找高活性农药先导化合物，考虑到三唑并噻二唑衍生物具有广泛的生物活性，本文利用活性亚结构拼接原理，将活性基团分别引入1，2，4-均三唑并[3，4-b]-1，3，4-噻二唑杂环的3位和6位，合成了未见文献报道的3，6-二取代均三唑并[3，4-b]-1，3，4-噻二唑类化合物11个，并用IR、1HNMR及元素分析测试技术对其进行了结构表征。

Anyone who vary the price in your millions of the most expensive to over 10,000 yen. March 3 girls section called Taohuajie, reportedly Nara era spread from China to Japan. March 3 days this family reunion to celebrate the healthy growth of girls, and then pick up the story of people awaiting held following the release in March of next year.

偶人的价格参差不一，贵的上百万，最便宜的也要1万多日元。3月3日女孩节又叫桃花节，据说是奈良时代从中国流传到日本的。3月3日这一天一家人团聚，共同庆祝女孩健康成长，然后把偶人收拾起来，等待明年3月份再拿出来。

We also get another expression of Steinberg's conjecture about plane graphs, that is, every plane graph without i(4≤i≤5) faces in which any two triangles have distance at least 3 and no 3-face is adjacent to any 6-faces is 3-colorable.

我们还得到平面图的一个类似结论：没有4、5面的平面图中如果任意两个3圈的距离至少为3，而且没有3面和6面相邻，那么这个图也是可以3色的。

We also get another expression of Steinbergs conjecture about plane graphs, that is, every plane graph without i(4≤i≤5) faces in which any two triangles have distance at least 3 and no 3-face is adjacent to any 6-faces is 3-colorable.

我们还得到平面图的一个类似结论：没有4、5面的平面图中如果任意两个3圈的距离至少为3，而且没有3面和6面相邻，那么这个图也是可以3色的。

Other Psionic and Magic Gear: Dorje of firefall (2nd), boots of stomping (3rd), crystal capacitor [1] (4th-8th), dorje of lesser body adjustment (4th), cloak of resistance +1 (5th-18th), dorje of ectoplasmic cocoon (6th-7th), crystal capacitor [3] (7th- 11th), dorje of invisibility [9th-level manifester] (8th), crystal mask of mindarmor (9th-12th), 3 powerleech pearls (10th, 18th- 20th), dorje of whitefire (10th), amulet of natural armor + 1 (11th-16th), third eye penetrate (11th), psionatrix of Psychokinesis (11th), crystal anchor (12th-14th), greater psionic restraints (12th-20th), ring of sustenance (12th), crystal capacitor [5] (13th-16th), torc of free will (13th), gloves of Dexterity +2 (14th-20th), dorje of negate psionics (14th-15th, 18th), ring of fire resistance (16th), amulet of natural armor +2 (17th-20th), damping psionic restraints (17th), crystal capacitor [7] (17th-18th), amulet of natural armor +3 (19th-20th), skin of the spider (19th-20th), crystal capacitor [9] (19th), third eye negate (20th).

其他灵能和魔法装备："落炎术"灵杖(2级)，重踏靴(3级)，灵容[1](4至8级)，"次级身体调节"灵杖(4级)，+1抗力斗篷(5至18级)，"星质茧"灵杖(6至7级)，灵容[3](7至11级)，"隐形术"灵杖[显能者等级9](8级)，水晶心防面具(9至12级)，夺能珍珠×3(10级、18至20级)，"苍火"灵杖(10级)，+1天生防御护符(11至16级)，穿透镶额眼(11级)，心灵转化灵锥(11级)，"魅惑人类"晶锚(12至14 级)，高级灵铐(12至20级)，维生戒指(12级)，灵容[5](13至16级)，自由意志项圈(13级)，+2敏捷手套(14至20级)，"消解灵能"灵杖(14至15级、18级)，次级抗火戒指(16级)，+2天生防御护符(17至20 级)，阻尼灵铐(17级)，灵容[7](17至18级)，+3天生防御护符(19至20级)，蜘蛛灵皮(19至20级)，灵容 [9](19级)，消能镶额眼(20级)。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失