搜尋標籤: "crystal"

Gram staining is a common method to stain and to differentiate bacteria into two main groups: Gram positive bacteria (when stained purple) and Gram negative bacteria (when stained pink). There are 4…

革蘭氏染色是一種常用來把細菌染色以分類的方法，染色後的細菌可分成兩大類：革蘭氏陽性細菌(被染成紫色的)及革蘭氏陰性細菌(被染成粉紅色的)。革蘭氏染色包括四個步驟，按次序是染色、固定染料顏色、脫色及複染，各步驟需用不同的化學劑和技巧。

本節目分成三個部分。 (一)…

Aunt Crystal is going on a holiday. She has to plan for her itinerary and pack before she leaves. Cheetah, her pet cat, thinks that he can enjoy the holidays with Aunt Crystal, too. To his…