NPN单管放大电路
NPN single-tube amplifier
垂直单管供暖系统
vertical one-pipe series heating system
单管PCR扩增
one tube PCR amplification
单管巢式多重聚合酶链反应
single-tube nested multiple-polymerase chain react
单管多重PCR
Single-tube complex PCR
Single-tube multiplex-PCR
单管二次氨化
singlepipe secondary ammoniation