不: a block of wood常见: common的: 4次方是 The fourth power of 2 i ...交换: exchange; swap; interchange; ...剂: a pharmaceutical or other ch ...不常见的: a.uncommon稀有的,不常见的: infrequent不常见的,不普通的: uncommon常见的: common; frequent; garden; hackneyed; usual交换剂: exchange material; exchanger交换剂;交换器: exchanger常见的除: charles aznavour常见的错误: a common error常见的还有: a trading firm a printing firm常见的危险: common hazards常见的问题: faq frequently asked questions最常见的: modal; the most common最常见的值: modal value; most probable value碱交换剂: base exchanging compound离子交换剂: chelating ionexchanger; ion-exchange material; ion-exchange medium; ionite; ion exchanger; ionut配基交换剂: ligand exchanger热交换剂: heat exchanger树脂交换剂: resinous exchanger无机交换剂: inorganic exchanger阳离交换剂: cationite