birch leaf meaning in English

桦树叶

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、紫罗兰叶、百里香、白桦叶、香茅、油菜子、金缕梅
Warmed by the spring sunshine he sat in the carriage , looking at the first grass , the first birch leaves and the first flecks of white spring clouds floating over the bright blue of the sky
他坐在四轮马车上，晒晒初春的太阳，不时地望望最早放青的野草，最先出现的白桦树叶和一团团在明朗的蔚蓝色的天空中飘浮的初春的白云。
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
利用双元载体的根癌农杆菌lba4404菌株( agrobacteriumtumefaciens ) ，含质粒pyhy (目的基因及npt 、 gus基因) ，对白桦试管苗茎段，叶柄，叶片三种外植体进行侵染，结果表明：大叶片生长势强，为转基因的最优外植体，转化率能够达到22 。