妈妈用剪刀剪开扎着粽子的绳子，剥开包着的两层竹叶片。
Mothers used scissors to cut the rope with rice dumplings, remove the package of the two layers of bamboo leaves.
通过不同叶片的比较还发现：锦竹叶片上不过量的黄色条纹并不会使其光合生理活动减弱；
Through the comparison between different leaves, we also discovered that the yellow stripe on leaves won't weaken photosynthetic activity;
以香石竹叶片为外植体，利用二次回归正交设计对其再生体系建立中的关键因素6-BA和NAA的浓度及其组合进行定量优化。
Optimal concentrations of 6-BA and NAA and their combinations were tested with quadratic regressive orthogonal design for their effect on shoot regeneration of Dianthus caryophyllus L.
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