合成物质

Yellow serofluid, brown yellow in color and colloid turbid state in appearance, contained sugars, ethanol, solids, and especially rich alcohol, aldehyde, acids, esters and beneficial microbes. It could be used as precursory substance for the improvement of liquor quality and liquor taste and the synthesis of flavoring substances.

黄浆水为棕黄色、胶体混浊态，含有糖分、酒精、固形物，特别是含有大量的醇、醛、酸、酯及有益微生物菌体，是可用来提高曲酒质量、改善风味、合成香味物质的前驱物质。

Chiral 3 methy 1,4 butanediol and its derivatives are the important intermediate of synthesis of chiral smectic liquid crystal polyesters and chiral natrual products with biological activity. In the paper, a new efficient route of 3 methyl 1,4 butanediol and its two derivatives, 2 methyl 4 tetrapyranyloxy 1 butanol and 2 methyl 4 tetrapyranylbutanal, was described, and the target products were synthesized by employing asymmetric hydroboration oxidation improved.

手性2－甲基－1，4－丁二醇及其衍生物是合成各种手性近晶型液晶材料以及手性天然生物活性物质的重要中间体，以3－甲基－3－丁烯－1－醇为原料利用改进的不对称硼氢化－氧化反应，成功地合成了－2－甲基－1，4－丁二醇以及其2种手性衍生物：－2－甲基－4－四氢吡喃氧基－1－醇和－2－甲基－4－四氢吡喃氧基丁醛。

A clean production technology of sodium sulfoxylate formaldehyde by one-step process with sodium pyrosulfite ,zinc powder and formaldehyde as raw materials was studied in detail.

详细研究了以焦亚硫酸钠、锌粉和甲醛为原料，一步法合成甲醛合次硫酸氢钠的清洁生产工艺，其最佳操作条件为：焦亚硫酸钠与锌粉物质的量比约1∶2.5，焦亚硫酸钠与甲醛物质的量比约1∶2.1，亚硫酸氢钠溶液的pH 3.3~3.6，活化温度≤45℃，最高温度97~102℃，高温反应时间

Esveratrol synthase is the key,exclusively necessary enzyme in the resveratrol synthetic pathway and it presents only in the plants which can synthetize resveratrol.

S催化Res的前体物质(4-香豆酰辅酶A和丙二酰辅酶A)经一步反应生成Res，而Res生物合成的前体物质普遍存在于植物中。

Studies on ultrastructure indicate that the follicular cells have the function to filter the extraneous substances, and they can also synthesize some vitellin materials toprovide nourishment which is needed by the development of the oocytc.

超微结构研究表明，滤泡上皮细胞除具筛选物质的作用外，还可合成某些卵黄物质，为卵母细胞的发育提供营养。

Results indicated that introducing some ring-structure into UF molecule during the synthesis could efficiently improve the water resistance of UF resin. The Uron ring would form if reaction temperature was more than 75 degrees C, and the higher Uron content was obtained at pH 8 and 85 degrees C in the absence of catalyst when the reaction time was long enough.

结果表明：通过在脲醛树脂合成中引入Uron环等环状结构物质能够有效提高脲醛树脂胶黏剂的耐水性；当反应温度高于75℃时，反应产物都生成了一定量的Uron环物质；在pH值为8左右、温度控制在85℃、不使用催化剂、尽可能延长反应时间的条件下，尿素与甲醛成环化反应生成的Uron相对值最多。

Tributyltin compounds found in some antifouling paint on ship hulls leaches into seawater and is toxic to marine organisms and humans; efforts are underway to restrict its use.

在一些船体的防污涂料中发现了三丁基锡（Tributyltin： TBT）合成物，还滤入海水中，这些物质对海洋生物和人类都是有毒的，努力严格控制这些合成物的使用。

"It secretes bile; metabolizes proteins, carbohydrates, and fat s; stores glycogen, vitamins, and other substances; synthesizes coagulation factors; removes wastes and toxic matter from the blood; regulates blood volume; and destroys old red blood cells."

肝能分泌胆汁，代谢蛋白质、碳水化合物和脂肪，贮存肝醣、维生素和其它物质，合成凝血因子，排除血液中的废物和有毒物质，调节血容量，以及破坏老旧的红血细胞。

Thankfully, man-made, synthetic purification processes can separate the good parts of the castor bean from the toxic ones.

感到欣慰的是，人造的，合成净化程序可以将蓖麻子里的有用物质与有毒物质分离开。

The yellow band indicates the amount of matter that can reside in "normal" matter, or baryons, as inferred from Nucleosynthesis.

黄色部分显示以&常态&物质存在的物质数量，或从核合成推论出的重子。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！