1)selective sand control,选择性防砂2)select grinding wheel,砂轮选择3)way of optimization,防砂优选4)antiseptic selection,防腐剂选择5)shape selectivity,择形选择性6)selectivity,选择性，选择能力
用法和例句
SAPO is a novel class of catalytic materials which exhibit excellent shape selectivity, thermal stability and hydrothermal stability,which can catalyze hydrocarbon reactions.