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leaf stalk中文是什么意思

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用"leaf stalk"造句"leaf stalk"怎么读"leaf stalk" in a sentence

中文翻译手机手机版

  • 【植物;植物学】叶柄。

例句与用法

  • Phyllodes are analogous to leaf blades , but are derived from petioles ( leaf stalks )
    叶状柄与叶片是同功器官,但它源于叶柄。
  • Mulberry , multi _ petalled ; upright flowers with black _ purple base , flat round buds , medium _ sized narrow leaves in dark green , stiff , slanting leaf stalks
    深紫红色,台阁型。瓣基黑紫,花朵直上,花蕾圆尖。叶中长尖,深绿色。叶柄硬,斜生。株型直立。
  • Above the skeleton of a fallen leaf stalks the dark shape of a spider out hunting for springtail or mite or whatever tiny invertebrate strays its way
    在一片落叶的叶脉上,潜伏着一只蜘蛛的黑影,它正准备猎捕弹尾虫、螨虫,或是任何一种迷路的微小的无脊椎动物。
  • 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 。
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