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Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.

合成了非天然氨基酸3-(4-噻唑基)-D,L-丙氨酸盐酸盐以及三个中间体,分别通过红外光谱、磁共振、元素分析、熔试手段得到确证。

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The structure and working principle of the devices for melting point measurement by means of thin film comparative method of cryoscopy were introduced.

介绍凝固下降薄层比较法量熔标准物质熔量装置的成与工作原理。

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听力文摘

Composition of the molecule, the melting point.

关于分子组合、点等。

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传说之境

Finally, at 0 degrees we reach the melting point of ice.

最后,在 0 度,我们达到了冰点。

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PBS趣味科普

Lower melting points, so these are your grilled cheese cheeses.

点,所以这些是你烤奶酪。

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PBS趣味科普

Now pressure does lower the melting point of ice.

压力确实会降点。

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透视百科科技类

That's hot enough to melt tungsten, the metal with the highest melting point in the universe.

其热度足以融化钨,宇宙中点最金属。

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Scishow 精选系列

And because Form IV has a lower melting point than Form V, the unwanted crystals melt again.

由于形态4比形态5,不需要晶体再次化。

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PBS访谈环境系列

And this wouldn't be possible if the ice was too warm, too close to the melting point.

而如果冰太温暖,太接融点,这是不可能

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Scishow 精选系列

All of them have different melting points, and all of them affect the final texture of the chocolate.

这6种结构都有不同点,而且它们也会影响巧克力最终口感。

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Crash Course 综合篇

Because it's an amorphous solid with bonds of varying strength, glass doesn't have an exact melting point.

因为玻璃是一种由强度不定化学键链接成非晶固体,它没有确定点。

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经济学人(汇总)

The material of these edges has a higher melting point and remains solid (otherwise it would count as welding).

这些边缘材料要具有点并保持固态(否则将被算作化)。

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This solid has a much lower melting point than cocaine, allowing it to be smoked, as opposed to snorted.

这种固体点比可卡因得多,使其可以吸食,而不是从鼻吸。

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Crash Course 综合篇

It's melting point is much higher but it melts at an exact temperature and has no pliable in-betweeny state.

点要得多,重要是它有确切点,所以不会变得和蜜糖一样。

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21世纪英文报

The robots in the study were made from gallium, a soft metal with a low melting point of 30 C.

该研究中机器人由镓制成,镓是一种软金属,其至约 30 摄氏度。

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趣味化学实验:Periodic Videos

Like Sodium it'ss quite a low melting point metal.

就像钠一样, 它是一种点很金属。

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问答进行中

This happens to basically every solid near its melting point.

基本上所有接固体都会发生这种情况。

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透视百科美食类

Halloumi is white and has a salty flavor and is often served grilled or fried because of its high melting point.

哈罗米是白色,有点儿咸味,由于,通常以烧烤或油炸方式食用。

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Asap SCIENCE 精选

Not so fast, unsaturated fat has a lower melting point and so its natural state is less solid, like vegetable oil.

别这么快下定论。不饱和脂肪融点比,所以它在自然状态下不那么容易凝固,就像植物油一样。

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化学 Crash Course

For that reason, these solids generally tend to be soft with fairly low melting points.

出于这个原因,这些固体通常趋于柔软且点相当

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潘潘

He used methane to burn the mica in order to find out its melting point.

他用甲烷加热云母为弄清它点。

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《分钟地球》趣味科普

After all, lead is plentiful, and since it has a low melting point, it’s easy to extract.

毕竟铅储量丰富,而且, 提取起来也很容易。

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