直接加氢用英语怎么说

To directly add hydrogen in English, we can say "hydrogenation".

Hydrogenation is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst such as nickel, palladium, or platinum. The process typically involves the addition of hydrogen atoms to a molecule, and can be used to alter the physical and chemical properties of a substance.

One common example of hydrogenation is the conversion of vegetable oils into solid fats, such as margarine or shortening, through the addition of hydrogen atoms to the unsaturated bonds in the oil molecules.

Here are some example sentences using the term "hydrogenation" in English:

The hydrogenation of vegetable oils allows them to have a longer shelf life and a more desirable texture.
Industrial hydrogenation is used to produce a wide range of products, including plastics, detergents, and lubricants.
Hydrogenation can be used to modify the properties of a substance, such as increasing its melting point or making it more soluble in certain solvents.

In Chinese:

直接加氢在英语中可以用"hydrogenation"表示。
加氢是分子氢（H2）和另一种化合物或元素之间的化学反应，通常在催化剂（如镍、钯或铂）的存在下进行。此过程通常包括向分子中添加氢原子，可用于改变物质的物理和化学性质。
加氢的一个常见例子是将植物油转化为固体脂肪，如人造黄油或短油，通过向油分子中的不饱和键添加氢原子。