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The better reaction conditions are as follows: Reaction temperature is 40°C, Reaction time is 5 hour; the ratio of L - phenylalanine to acetic acid and N - formyl - L- aspartyl anhydrideis 1:10.2:1.1, Its yield is 95.4%.

在查阅文献的基础上,得到较优的α-L-天冬氨酰L-苯丙氨酸甲脂盐酸盐的合成方案,在甲醇一水体系中,N-甲酰-α-L-天冬氨酰-L-苯丙氨酸在盐酸的作用下60℃水解90分钟,后冷却到15℃加入盐酸在20~30℃保温反应96小时,进行甲脂化,形成甲脂盐酸盐,结晶析出。

The sythesis of methyl glycolate by methyl formate coupled with triformaldehyde with the catalyst of superphosphoric acid is exploring researched in this thesis. The point of exertion is the capacity of the new catalysts.

本研究主要对以过磷酸为催化剂催化甲酸甲酯与三聚甲醛偶联合成乙醇酸甲酯进行考查,通过对以过磷酸、硫酸及过磷酸与硫酸混合酸催化剂时反应现象、乙醇酸甲酯产率等的对比,研究以过磷酸为催化剂偶联合成乙醇酸甲酯反应的催化活性。

Leaves sessile; blade broadly oblong or oblong-ovate to narrowly oblong or oblong-lanceolate, 2-6.5(-8)× 1-3.2 cm, thickly papery, abaxially rather paler but not glaucous; laminar glands dense, unequal dots or short streaks; intramarginal glands dense; main lateral veins 4-6-paired, with densely reticulate tertiary venation not or scarcely prominent abaxially; base cordate-amplexicaul, apex rounded to shallowly retuse.

叶无柄 叶片宽长圆形或长圆状卵形到狭长圆形或长圆状披针形, 2-6.5(-8)* 1-3.2 厘米,厚纸质,背面相当浅但不是苍白;片状腺体,不相等的小圆点或者短的条纹;近边缘内腺体; 4-6配对的主要侧脉,突出的具密网状第三脉不或几乎不;抱茎基部心形,先端圆形对浅微凹。

Ennis Del Mar is complemented and complicated by Casanova, whom Mr. Ledger played in Lasse Hallstrom's unfairly neglected biopic-as-sex-farce, which came and went too quickly in late 2005, during the ascendancy of "Brokeback Mountain."

在演完Lasse Hallstrom 导演的电影《情威尼斯》之后,希斯才被认为藉由Ennis Del Mar 这个角色让他的演技更为成熟与丰富,也因为《情威尼斯》在《断背山》仍旧余波荡漾的期间才上映,所以当中那个玩世不恭传记喜剧角色早就被人们遗忘。

The experimental results show that the process is not only effective use of the concentrated sea water, the concentrated solution of sea water emissions, and produce six water quality is better than the industry standard magnesium chloride.

实验结果表明,采用该工艺不仅有效利用了海水,解决了海水排放问题,而且生产出的六水氯化镁质量优于行业标准。

Combine espresso, additional Marsala, sugar, and warm water.

将2杯咖啡,2汤匙的marsala酒,2汤匙的糖,还有半杯暖水混合起来制成咖啡混合液体。

The amount of solution elevation, the vapor amount and the maximum height of the elevated solution are related to different heat loads.

得出了溶液的提升量、蒸汽发生量、溶液最大提升高度对应于不同的加热负荷的关系曲线,实验发现这种蒸发管是一种有效的强化传热管。

The results were gained that correspond to different heat load, amount of solution elevation, vapor amount, maximum height of the elevated solution, the minimum submersed depth of solution.

得出了对应于不同的加热负荷,溶液的提升量、蒸汽发生量、溶液最大提升高度及稀溶液最小浸没高度的关系曲线,为该类型热虹吸泵的设计和运行提供了依据。

Princess Noh or Princess of Mino. If this is referring to Oda's wife, why would

一般被称作姬或者是美公主。

This invention relates to a gas reburning and double-channel rich/lean integrated combustor of low Nox, in which 7 air nozzles and 7 fuel nozzles interlace with each other. The air nozzles are all connected to a bellow and receive air supply from a large tank-type bellow. The fuel nozzles are connected to respective fuel system through the bellow. From up to down, the 7 fuel nozzles are: the gas nozzle, the double-channel up-lean and down-rich coal powder nozzle, the double channel up-rich and down-lean coal powder channel, 3 double-channel level rich/lean coal powder nozzle (the rich phase is near the flame), and the oil nozzle inside the nethermost air nozzle.

气体再燃与双通道淡集成型低Nox燃烧器,7个空气喷嘴和7个燃料喷嘴交错布置,各空气喷嘴与风箱连接,由一个槽型体大风箱供风,各燃料喷嘴均穿过风箱同各自的燃料系统连接,7个燃料喷嘴从上至下依次排列为:燃气喷嘴、双通道上淡下煤粉喷嘴、双通道上下淡煤粉喷嘴和3个双通道水平淡煤粉喷嘴,燃油喷嘴置于最下边的空气喷嘴中。

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推荐网络例句

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是,在否定句或疑问句里,这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷

Nusa lembongan : Bali's sister island, coral and sand beaches, crystal clear water, surfing.

Nusa Dua :豪华度假村,冲浪和潜水,沙滩,水晶般晶莹剔透的水,网络冲浪。