In metalwork one advantage of adhesive-bonding over spot-welding is that the contact, and hence the bonding, is effected continuously over a broad surface instead of a series of regularly spaced points with no bonding in between.
40. In metalwork one advantage of adhesive-bonding over spot-welding is that the contact, and hence the bonding, is effected continuously over a broad surface instead of a series of regularly spaced points with no bonding in between.
(A) instead of
(B) as opposed to (C) in contrast with (D) rather than at(D) (E) as against being at
想请教大家的是这里 and hence the bonding算是什么用法?插入语?为什么用and连接,却又不影响谓语动词的数?真奇怪!