These are of two varieties, known as single and double bonds.

键有两，单键和双键。

When heated, the paste develops chemical bonds with living tissue on both sides.

当受热时，糊状物与两侧活组织形成键。

Normally, different molecules are connected by covalent chemical bonds between their atoms.

通常情况下，不同分子通过原子间共价键相连接。

Photosynthesis takes sunlight and stores solar energy in chemical bonds.

光合作用吸收了太阳能并把它存储在键中。

And one of the keys to breaking these bonds is through oxidation.

破坏这些键关键之一是通过氧。

In part, these PFAS are effective because their chemical bonds are incredibly strong.

在某程度上，这些 PFAS 有效原因是因为它们键非常牢固。

Here you might have those same bonds.

静止时 不仅有这些键。

Plastics are made up of long chains of polymers with very strong bonds.

塑料由长链聚合物组成，它们之间键非常牢固。

To put it chemistry specific, it has two unpaired electrons, which really want to form chemical bonds.

具体到，它有两个不成对电子，它们真想形成键。

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

因为玻璃是一由强度不定键链接成非晶固体，它没有确定熔点。

And also like graphite and diamond, the different forms that they take are all about bonding differences.

与石墨和金刚石一样，键差异也会导致不同网状结构。

Well, in nature, most things decompose because bacteria breaks down the chemical bonds that hold a substance together.

在自然界中，大多数物质都会分解，因为细菌会破坏将物质结合在一起键。

Finally, DNA polymerase fills the gaps on both sides of the union and DNA ligase seals the bond.

最后，DNA聚合酶会填补两侧连接处空白；DNA连接酶会将键连接起来。

Right – because gum actually creates a chemical bond – which means when one thing joins firmly to another.

对，因为口香糖实际上会和其他与之接触物体之间产生键，两者会很紧密地粘连起来。

And that's the way that the bonds, when they freeze, they actually force the water to have a fixed side.

这就是键，当它们冻结时，它们迫使水有固定一面。

So, the researchers developed a library of slightly-tweaked possible molecules that might be slower to dissolve a crosslinked bond.

因此，研究人员开发了一个可稍作调整分子库，这些分子可以使交联键溶解得更慢。

In the lit areas, a reaction weakens the photoresist's chemical bonds.

在光照区域，反应会削弱光刻胶键。

The molecules chemical bonds is a step toward unlocking that shape.

分子键是解锁其形状一个步骤。

It also connects to galvanic and voltaic cells, chemical bonds and electronegativity, and lemon batteries.

它还涉及了伽伐尼电池和伏打电池、键和电负性，以及柠檬电池。

It’s never broken apart, so the energy in its bonds is never released.

它从未分解过，因此其键中能量从未被释放出来。