соединение

I

см. тж. в месте соединения; соединён параллельно

• A fish plate is a simple bar used for joining rails in tracks.

• A welded joint ...

II

см. тж. вступать в соединение

• Linking together the monomer units ...

• Oxidation is defined as the combination (or union) of oxygen with some other element.

• A chemical compound.

• The term "hydride" is used to describe a compound of an element with hydrogen.