starting material的例句大全

Screening for2-bromo-butyric acid as the starting material, after ammonolysis, esterification, ester amine solution, split, five-step cyclization reaction Levetiracetam.

筛选以2-溴代丁酸为起始原料，经氨解，酯化，酯胺解，拆分，环合五步反应制得左乙拉西坦。

methods l-ephedrine was synthesized by taking propiophenone as the starting material followed 4 steps reactions.

方法以苯丙酮为起始原料,经溴代、甲胺化、还原、拆分等反应制得l - 麻黄碱.

Using magnesia as main starting material and adding appropriate amount of low and intermediate temperature compound sintering agent and super micro powder, with a small oscillation making the substance flow, an unformed material of high density and strength is obtained.

以镁砂为骨料，添加适量的低、中温复合烧结剂和超微粉，在较小的振动力作用下，使物料流动，并获得较高的堆积密度与强度的不定形材料。

With high alumina cement and floating particle as main starting material, a new unfired floating particle insulating refractory product has been developed.

以高铝水泥和漂珠为主要原料.研制出一种新型不烧漂珠隔热耐火制品。

Dioscorea zingiberensis C. H. Wright of dioscoreaceae is an important medicinal plant growing only in China by reason that diosgenin in its rhizome is a widely used starting material for hormone drugs.

盾叶薯蓣（Dioscorea zingiberensis C.H.Wright）是我国特有的、具有重要经济意义的药用植物，其有效成分薯蓣皂甙元（diosgenin）是合成甾体激素药物的重要原料。

Cefixime open side chain acid was prepared by oximation, etherification, chlorination, ester decomposition using t-butyl acetoacetate as starting material.

以乙酰乙酸叔丁酯为原料，经过肟化、醚化、氯代酯解反应合成了头孢克肟开环侧链酸。

The Kyoto University researchers hope to be able to repeat their success using sliversof skin as starting material, allowing men to father children that are genetically their own.

日本京都大学的研究者们希望可以复制他们的成功经验，以皮肤组织为原始材料，让男性拥有自己的亲生孩子。

Diosgenin has been studied as an important bioactive compound and starting material, it mainly comes from dioscorea zingiberensis.

薯蓣皂素是一种重要的活性化合物和原料药，主要来自于黄姜。

Let's say we have an abundance of the starting material, and not very much light.

比如我们有大量的反应物，但是没有光。

What constitutes the "starting material" may not always be obvious.

什么构成了“起始物料”并不总是很明显。

coenzyme q 0 was prepared via two steps using commercially available 3,4,5-trimethoxy benzaldehyde as the starting material. the overall yield has reached 43.8%.

以商用3,4,5三甲氧基苯甲醛（Ⅰ）为起始原料，通过两步反应，合成了辅酶Q0，总收率达43.8%。

the synthesis of high-nitrogen energetic materials bis-( triaminoguanidinium)-5,5 ′-azotetrazolate ( tagzt) from starting material 5-aminotetrazole ( 5-at) by a novel method only in two steps was investigated.

以5-氨基四唑（5-AT）为起始原料经过两步反应合成了偶氮四唑类高氮含能化合物&偶氮四唑三氨基胍盐（TAGZT）。

from a common starting material, we developed three different total syntheses, one of which is the biomimetic synthesis.

根据它们的结构特点，我们从同一起始原料出发，成功地发展了三条不同的全合成路线，其中包括一条仿生全合成路线。

advantages include less downtime to charge the reaction vessel with starting material, and less workup.

给反应釜内添加原料的停工时间少；工作量小。

conclusion the phase transfer catalyst has advantages of simple starting material, convenient operations and mild reaction conditions.

相转移法合成萘丁美酮具有所用试剂易得，操作方法简便，反应条件温和，成本较低等优点。

the manufacture process of bromoethane from bromine, sulfur and ethyl alcohol as starting material is improved significantly by modifying synthetic conditions and adding a suitable additive agent.

改变工艺条件，添加适当助剂后，以溴、硫、乙醇为原料生产溴乙烷的方法得到显著改善。

the heated starting material (1) is continuously molded into the molded article, and the resin is cured in the molded article.

加热的起始原料（1）连续地被模塑成模制品，并且树脂在模制品中被固化。

methods ranolazine was synthesized by using 2, 6-dimethylaniline and guaiacol as the starting material fellewed by 4 step reactions.

方法以2,6-二甲基苯胺、愈创木酚为原料，经酰化、烃化等4步反应制得雷诺嗪。

such as skin color and roll from the starting material identification, as may be a glimpse of 12.

比如从皮色及滚料识别入手，当可窥见一二。

Arachidonic acid is the starting material from which potent inflammatory compounds such as leukotrienes are made.

花生四烯酸是从哪个有力的起始原料,如白三烯是由炎症化合物.