四重

A 19 line poem of fixed form consisting of five tercets and a final quatrain on two rhymes , with the first and third lines of the first tercet repeated alternately as a refrain closing the succeeding stanzas and joined as the final couplet of the quatrain .

田园诗：一种有固定格式的19行诗；由五个三行押韵的诗节和一个四行诗节组成，其四行诗节有二个韵，在第一个三行押韵诗节中，第一行和第三行作为结束后继诗节的重复句间隔地重复出现，并作为四行诗的结尾对句一起再现

We firstly succeeded in the separation of the new cationic complexes of tetrakis (4-methoxyphenyl) porphyrin with yttrium, erbium, thulium and ytterbium (RE-TMOPP-Cl) by reserved-phase high performance liquid chromatography.

我们首次用高效液相色谱分离了性质极其相似的钇、铒、铥和镱四个重稀土的阳离子型四（4-甲氧基苯基）卟啉配合物。

And weave your winding-sheet,till fairEngland be your sepulchre.

全诗共八节，每节四行，每行四个重音节，双行韵式aa-bb。

Water, Sodium Laureth Sulfate, Cocamidopropyl Betaine, Cocamide MEA, Disodium Cocamphodiacetate, Sodium Lauryl Sulfate, PEG 40 Hydrogenated Castor Oil, Perfume, Sodium Chloride, Propylene Glycol, Quaternium 80, Methylparaben, Polyquaternium 10, Hydroxypropyl Guar Hydroxpropyltrimonium Chloride, Citric Acid, Diazolidinyl Urea, Tetrasodium EDTA, Polyquaternium 7, Propylparaben, Sodium Hydroxide, Panthenol, Persea Gratissima Oil, Penta Sodium Pentetate, Hedera Helix Extract, Bambusa Vulgaris Extract

水，月桂醇聚醚硫酸酯钠，椰油酰胺丙基甜菜碱，椰油酰胺MEA，椰油酰两性基二乙酸二钠，月桂醇硫酸酯钠，PEG 40 氢化篦麻油，香料，氯化钠，丙二醇，季铵盐-80，苯甲酸甲脂，聚季铵盐-10，羟丙基瓜尔胶羟丙基三甲基氯化铵，柠檬酸，重氮烷基咪唑脲，乙二氨四醋酸四钠，聚季铵盐-7，对羟基苯甲酸丙酯，氢氧化钠，泛酰醇，酪梨油，喷替酸五钠，常春藤萃取物，银竹萃取物。

The testing methods and targets were shown as below:Recorded milk weights from the 7th day postpartum to 15th day postpartum,and calculate the average day-milk yield;Milk samples were draw in 7th day and 14th day postpartum,and testing the milk fat,milk lactose,milk protein,milk Zn and the milk somatic cell counts;Blood samples were adopted at the 7th day postpartum,testing the levels of serum PRL; Blood samples adopted at the 1st day and the 12th day in oestrous cycle were used to test the levels of E_2 and P_4 in serum;In the experimental stage, registering the condition of parturition, the mean birth weight of calves,the first oestrus,the oestrus scycle postpartum and the conception rate of the first service after artificial insemination.

试验方法及所测指标如下：于产后第七天到第十四天记录日产奶量，最后计算每组平均日产奶量；每组随机抽取分娩后第七天、第十四天的奶样，测定乳糖、乳蛋白、乳脂、乳锌含量及乳体细胞数；于产后第七天，随机采取奶牛血样，测定血清中PRL含量；于发情周期的当天和第12天，随机采取血样，测定血清中雌二醇(Estradiol，E2)和孕酮(Progesterone，P)的浓度；记录奶牛的分娩情况、犊牛初生重、产后第一次发情日期、产后发情周期，并采用人工授精技术进行受精，记录第一情期受胎率，最后取平均值，作为衡量奶牛繁殖性能的指标。

Years of age do not eat honey, honey is a single sugar, the negative absorption, the same as glucose, do not eat, constipation can rule by other means, such as cooked apple to give him water to drink, or吃梨mud, pitaya can, my son is constipated the past two days, I cut half a dragon fruit for him to eat, because太凉, it can not be too much time to eat, so eat a quarter of a morning, afternoon, eat a quarter of of a stool as soon as they become soft, and give him water to drink, not to eat sweet baby food, because your baby's taste is very sensitive and may feel that the taste of the general adult non-sweet sweet baby food to said to be just, and not after the taste he will be getting heavier and heavier.

2岁以内都不要吃蜂蜜，蜂蜜是单糖，不利吸收，就像葡萄糖也是一样的，都不要吃，治便秘可以用别的方法，比如煮苹果水给他喝，或是吃梨泥，火龙果也可以，我儿子这两天也是便秘，我是切半个火龙果，给他吃，因为太凉了，也不能一次吃太多，所以早上吃四分之一个，下午再吃四分之一个，大便马上就变成软便了，多给他喝开水，不要给宝宝吃过甜的食物，因为宝宝的味觉是非常敏感的，一般大人尝过觉得似甜非甜的食物对宝宝来说是刚好的，不然以后他的口味会越来越重。

A19 line poem of fixed form consisting of five tercets and a final quatrain on two rhymes , with the first and third of the first tercet repeated alternately as a refrain closing the succeeding stanzas and joined as the final couplet of the quatrain .

田园诗一种有固定格式的19诗；由五个三押韵的诗和一个四诗组成，其四诗有二个韵，在第一个三押韵诗中，第一和第三作为结束后继诗的重复句间隔地重复出现，并作为四诗的结尾对句一起再现

A19 line poem of fixed form consisting of five tercets and a final quatrain on two rhymes , with the first and third lines of the first tercet repeated alternately as a refrain closing the succeeding stanzas and joined as the final couplet of the quatrain .

田园诗一种有固定格式19行诗；由五个行押韵诗和一个四行诗组成，其四行诗有二个韵，在第一个行押韵诗中，第一行和第三行作为结束后继诗重复句间隔地重复出现，并作为四行诗结尾对句一起再现

Methods 2-(piperazin-1-yl)-1-(pyrrolidin-1-yl)ethanone (2) was synthesized from pyrrolidine via amidation and substitution, followed by treating with chloroacetyl chloride and triphenylphosphine in a "one pot" manner to give the corresponding phosphonium chloride 3 in a stable and pure form after crystallization from isopropanol.

以四氢吡咯为原料，先与氯乙酰氯成酰胺，再与哌嗪发生取代反应制得中间体［（1-四氢吡咯基）甲基］哌嗪(2)；化合物2与氯乙酰氯和三苯基膦反应，经异丙醇重结晶得到稳定的有机鏻盐(3)；化合物3与3，4，5-三甲氧基苯甲醛发生Wittig反应，再与马来酸成盐得目标化合物马来酸桂哌齐特(1)。

It was of no avail that the pavements of Paris were there on every side, the classic and splendid hotels of the Rue de Varennes a couple of paces away, the dome of the Invalides close at hand, the Chamber of Deputies not far off; the carriages of the Rue de Bourgogne and of the Rue Saint-Dominique rumbled luxuriously, in vain, in the vicinity, in vain did the yellow, brown, white, and red omnibuses cross each other's course at the neighboring cross-roads; the Rue Plumet was the desert; and the death of the former proprietors, the revolution which had passed over it, the crumbling away of ancient fortunes, absence, forgetfulness, forty years of abandonment and widowhood, had sufficed to restore to this privileged spot ferns, mulleins, hemlock, yarrow, tall weeds, great crimped plants, with large leaves of pale green cloth, lizards, beetles, uneasy and rapid insects; to cause to spring forth from the depths of the earth and to reappear between those four walls a certain indescribable and savage grandeur; and for nature, which disconcerts the petty arrangements of man, and which sheds herself always thoroughly where she diffuses herself at all, in the ant as well as in the eagle, to blossom out in a petty little Parisian garden with as much rude force and majesty as in a virgin forest of the New World.

巴黎的铺石路白白在那一带围绕，华伦街上的那些典雅富丽的府第相隔才两步路，残废军人院的圆顶近在咫尺，众议院也不远，勃艮第街上和圣多米尼克街上的那些软兜轿车白白地在那一带炫耀豪华，驶来驶去，黄色的、褐色的、白色的、红色的公共马车也都白白地在那附近的十字路口交织奔驰，卜吕梅街却但是冷清清的；旧时财主们的死亡，一次已成过去的革命，古代豪门望族的崩溃、迁徒、遗忘，四十年的抛弃和寡居，已足使这个享受过特权的地段重新生满了羊齿、锦葵、霸王鞭、蓍草、长茅草，还有那种叶子宽大、颜色灰绿、斑驳的高大植物，蜥蜴、蜣螂、种种仓皇急窜的昆虫，使那种无可言喻的蛮荒粗野的壮观从土壤深处滋长起来，再次展现在那四道围墙里，使自然界？？阻扰着人类渺小心机的、随时随地在蚂蚁身上或雄鹰身上都肆意孳息的自然界，在巴黎的一个陋劣的小小园子里，如同在新大陆的处女林中那样，既犷悍又庄严地炫耀着自己。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。