词汇	precordial lead
释义	precordial lead 心前区导联
随便看	site-defined master user identification site-dependent site-dependent constant site dependent design spectrum site description site design site designation memorandum site design by leitmotif Site design earthquake Site designs site detection site development site diameter site diary site difference site dimensions site-directed site-directed immobilization site directed integration site-directed integration site-directed mutagencsis Site-Directed Mutageneses site-directedmutagenesis site directed mutagenesis site-directed mutagenesis