短語詞組短語negative -staining TEM 負染色電鏡negative contrast staining 負對比染色negative staining electron microscope 電鏡負染Congo red negative staining 剛果紅負染negative staining technique 負染色法;負染色技術(shù)negative staining electron microscopy 負染電鏡direct negative staining method 直接負染法 返回 negative staining