The chemical composition is actually potassium nitrate.

化学成分实际上是硝酸钾。

That technology tells us the chemical composition of the environment.

这项技术会告诉我们环境的化学成分。

The chemical composition of our bronze sculptures keeps them recognizable for over 10 million.

人类青铜雕塑的化学成分使人们对它们的认知度超过一千万年。

Keenan chased down the chompers to investigate what whitening strips do to a tooth's chemical composition.

基南追踪这些牙齿，以研究美白牙贴会对牙齿的化学成分产生何种影响。

To analyze the structure and chemical composition of the beads, researchers bombarded them with neutrons and gamma rays.

为了分析这些珠子的结构和化学成分，研究人员用中子和伽马射线撞击它们。

We measure the chemical composition of the atmosphere using isotopes: they're like different flavors of atomic elements.

我们用同位素测量大气的化学成分：它们就像不同味道的原子元素。

Even if they have the same chemical composition, the temperature and pressure when they form can lead to different shapes.

即便它们有着相同的化学成分，它们形成时的温度和压力条件会使它们呈现不同的形态。

The chemical composition of our breath gives away our feelings.

我们呼吸的化学成分泄露了我们的感受。

Scientists say Webb should be able to tell them if any of these planets have water or chemical compositions that could support life.

科学家说，韦伯望远镜应该能够告诉他们，这些行星中是否有水或化学成分可以支持生命。

We take natural gas, the chemical composition is CH4, that's methane.

我们以天然气为例，化学成分是CH4，也就是甲烷。

And then you combine those to make NH3, which is the chemical composition for ammonia.

然后将它们结合起来生成 NH3，这是氨的化学成分。

Doctors, patients and biotechnology companies are interested in the information content of genes, the argument runs, not the incidental details of their chemical composition.

他们还认为，医生、患者以及生物技术公司感兴趣的是基因的信息内容，而不是化学合成基因所附带的信息。

This heavily modifies its physical properties, chemical compositions and mineralogical features, and in turn, the optical reflectance spectra of the moon, said the paper.

这严重改变了月球的物理性质、化学成分和矿物学特征，进而改变了月球的光学反射光谱。

Supposedly, this alters the chemical composition of the baking soda to make it perform more like lye.

据说，这会改变小苏打的化学成分，使其表现得更像碱液。

But now in his 40s, he continues to study the chemical compositions of the brightest galaxies.

但如今，40 多岁的他仍在继续研究最亮星系的化学成分。

Margarine on the other hand is created primarily from plant oils which have a similar but different chemical composition.

另一方面，人造黄油主要由具有相似但不同化学成分的植物油制成。

Again, the ability of dust particles to absorb solar radiation depends on their size, shape and mineralogical and chemical composition.

同样，尘埃颗粒吸收太阳辐射的能力取决于它们的大小、形状以及矿物和化学成分。

Modern bees protect their nest chambers against water by using a special waterproofing substance that has a distinctive chemical composition.

现代蜜蜂通过使用一种具有独特化学成分的特殊防水物质来保护它们的巢室不受水的影响。

So all drugs must have a specific chemical composition which gives them the key to unlock this barrier and pass through.

因此， 所有药物都必须具有特定的化学成分，这为它们提供了打开此屏障并通过的钥匙。

Both of these compounds have the same chemical composition, but different qualities due to the way their crystal lattices are arranged.

这两种化合物具有相同的化学成分，但由于它们的晶格排列方式不同， 性质不同。