1)q-expansion formula,q展开式2)q expansions,q-展开式3)q-ary expansion,q进展开式4)q—Maler expansions,q-Mahler展式5)expansion,展开，展开式6)Q-switch of pulse drives,升压式 Q 开关
用法和例句
Characteristics of the Q-switch of pulse drives with KD~(?)P crystals and the double-channel 6-step traveling-wave power amplifier are presented,inspectively.