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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构分别通过红外光谱、磁共振、元素分析、熔点手段得到确证。

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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.

介绍凝固点下降薄层比较法量熔点标准物质熔点的量装置的构成与工作原理。

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

最后,在 0 度,我们达到了冰的点。

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PBS趣味科普

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

较低的点,所以这些是你的烤奶酪。

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PBS趣味科普

Now pressure does lower the melting point of ice.

压力确实会降低冰的点。

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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.

其热度足以融钨,宇宙中点最高的金属。

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Scishow 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点低,不需要的晶体再次

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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,太接近融点,这是不可能的。

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Scishow 选系列

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

这6种结构都有不同的点,而且它们也会影响巧克力最终的口感。

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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的学键链接成的非晶固体,它没有确定的点。

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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).

这些边缘的材料要具有较高的点并保持固态(否则将被算作)。

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Asap SCIENCE

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

这种固体的点比可卡因低得多,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.

它的点要高得多,重要的是它有确切的点,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.

该研究中的机器人由镓制成,镓是一种软金属,其点低至约 30 摄氏度。

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趣味学实验:Periodic Videos

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

就像钠一样, 它是一种点很低的金属。

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问答进行中

This happens to basically every solid near its melting point.

基本上所有接近点的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.

哈罗米是白色的,有点儿咸味,由于点较高,通常以烧烤或油炸的方式食用。

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Veritasium真理元素

The filaments changed from carbon to tungsten, which has a very high melting point.

灯丝由碳变成了钨,钨的点非常高。

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Asap SCIENCE

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。不饱和脂肪的融点比较低,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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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低。

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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的点。

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