等价的类型可替换程度取决于兼容性，是完全兼容，还是前向兼容，还是后向兼容。
The substitution of the equivalent types depends on the compatibility of types, whether they are fully compatible, forward compatible, or backward compatible.
重点论述了前向兼容与后向兼容、锡须、空洞与微空洞、可焊性涂层以及如何避免无铅转移中出现的问题。
The forward compatibility backward compatibility tin whisker voids micro-voids and surface finishes were emphasized and how to avoid the lead free transfer problems were reviewed.
没有以色列领导人，即使是最温和的，曾经前兼容视为以色列的安全世纪的回报火线向停火一战结束一半以上。
No Israeli leader-even the most dovish-has ever considered as compatible with Israel's security a return to the cease-fire line of a war that ended over a half-century ago.
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