birch leaf 中文意思是什麼

birch leaf 解釋
樺樹葉
  • birch : n. 1. 【植物；植物學】樺，白樺；樺屬。2. 樺木；（處罰學童用的）樺枝，樺條〈又名birch-rod〉。3. 樺皮船。vt. 用樺條打。adj. 樺木的；樺木製的。
  • leaf : n （pl leaves）1 葉；〈集合詞〉葉子；茶葉，煙葉。2 花瓣。3 （書刊等的）一張（兩面）。4 金屬薄片，...
  1. The materials as explant in transformation come from birch leaf, stem segment and leaf stalk, and the spider toxin gene was used as foreign gene for this transformation experiment. it showed that the best explant was the big leaf, on which the transformation frequency was 22 %. by gus detection, there were 43 percent of the plants with kanamycin resistance, and 100 percent of positive result, by pcr amplification, was gotten from random sampling

    利用雙元載體的根癌農桿菌lba4404菌株（ agrobacteriumtumefaciens ） ，含質粒pyhy （目的基因及npt 、 gus基因） ，對白樺試管苗莖段，葉柄，葉片三種外植體進行侵染，結果表明：大葉片生長勢強，為轉基因的最優外植體，轉化率能夠達到22 。
  2. Cinnamon violet leaf thyme birch leaf lemongrass cole seed witch hazel use with water to clean and exfoliate with one sensational product

    成份：肉桂、紫羅蘭葉、百里香、白樺葉、香茅、油菜子、金縷梅
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