“联接”造句
高聚物都是由共价链
联接原子而形成的长链分子所组成.
Polymers consist of long molecular chains of covalently bonded atoms.
导线的两端
联接到裂环整流器.
The two ends of the wire are connected to a split - ring commutator.
电刷和电能源相
联接.
The brushes are connected to the source of electrical energy.