换: exchange; barter; trade鞋: shoes处: place换鞋, 换步: change feet换鞋底: resole; sole换鞋间: changing room请您换鞋: for cleanliness please change your shoes为保持清洁，请您换鞋: for cleanliness， please change your shoes换效序列: out of service sequence换新: change for new; renew; kainogenesis换效安全: fail safe; fail tree analysis换新成本: renewal cost换向状况: commutation condition换新船级检验: first class renewal survey换向装置偏振计: gimbal-mounted polarimeter
