nitrc[机] 氮素的, 含氮的nitn.虱子；没用的人Nitzschia ventricosan.膨胀菱形藻nitrocellulose block块状硝化纤维素nitroso-derivative亚硝基衍生物Nitriogen fertilizer氮素化肥nitrating centrifuge硝化离心机Nitella brevidactylan.短顶丽藻Nitzschia lanceolatan.披针菱形藻nitrifying organisms[医] 硝化菌nitrocarboxylic acid硝基羟酸nitrergic relaxation氧化氮能松弛