The apical cell of the first leaf and of the first root originate almost at the same time after the embryo reaches to the 32-celled phase.
胚胎在32细胞阶段后，第一叶顶端细胞与第一根顶端细胞几乎同时发生。
METHOD HPLC gradient elution method was used with methanol-water as the mobile phase to determine the contents of triptolide in its root, branch and leaf at different periods of its storage.
方法以甲醇-水为流动相，采用HPLC梯度洗脱法，测定了雷公藤药材的根、枝、叶中雷公藤甲素在不同存贮期的含量。
Feasible cutting time for producing alfalfa leaf meal was bud appearing to 10% flowering phase.
生产紫花苜蓿叶粉适宜刈割期为现蕾至10%开花。
The parameters of energy exchange influence photosynthesis especially in late phase during leaf aging for the tested materials.
各供试材料光合能量转换参数对光合作用的影响主要表现在叶片老化后期。
The most distinctive biological feature is the Leaf Area Ratio(LAR), it is higher in former phase and lower in later, and decline to its smallest around the period of Milky Ripeness.
叶面积比率的生物学特征最为明显，冬小麦返青到拔节期间的叶面积比率最大，拔节之后，叶面积比率逐渐下降，在冬小麦乳熟期前后达到最小。
In 1997, the valid tiller ending phase and maximum tiller phase delayed and leaf ages index increased in medium and late tillering phase under high_temperature.
1997年在分蘖中、后期持续高温，有效分蘖终止期和最高分蘖期向后延迟，叶龄指数增加。
Benzaldehyde was prepared by basic hydrolysis of cassia leaf oil using phase transfer catalyts.
从桂叶油出发，通过碱性水解制备天然苯甲醛。
Benzaldehyde was prepared by basic hydrolysis of cassia leaf oil using phase transfer catalyts.
从桂叶油出发，通过碱性水解制备天然苯甲醛。
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