单词	症幾時作呢
释义	同FIT
随便看	selective availability{=sa} selective backup selective bacteriostasis selective beacon radar selective bias selective bottom up selective breeding selective breeding of livestock selective broadcast receiving station selective broadcast receiving station {= sbrs} selective broadcast sending station selective broadcast sending station {= sbss} selective buying selective calling selective calling equipment selective calling number selective calling system selective calling system (selcal) selective call number selective call signal selective carburizing selective carryover selective cataloging selective catalyst selective catalytic reduction