选择六种不同的叶梢间隙研究叶梢间隙对导管桨性能的影响。
The effects of tip clearance on duct propeller's performance were investigated in six different tip clearances.
本文用涡动力学理论分析了锯齿形叶梢对螺旋桨的梢涡的影响。
The effect of the sawtooth shape tip on tip vortex of the propeller is studied with the theory of vortex dynamics in the paper.
通过对短穗和茶枝梢头扦插的试验研究，得出茶枝梢头扦插优于短穗扦插，梢头扦插又以三叶梢效果最好的结论。
Through the experimental research on single node and poly-leaves cutting, we concluded that poly-leaves cutting is better than single node cutting, and three-leaves cutting is best in effect.
对不同季节茶树新梢不同部位鲜叶中儿茶素组分和非酯型儿茶素合成酶的变化规律进行了研究。
The changes of non-galloylated catechins and relative enzymes as well as the composition of catechins in different parts of tea shoots and in different seasons were investigated in this paper.
结果表明：从新梢顶端到第9个展开叶之间的芽处于生理分化期，花芽生理分化期分为成花诱导期和花芽孕育期。
The results presents that buds from the shoot apex to the 9th unfolding leaves were in the period of physiological differentiation which can be divided into flower induction and flower initiation.
从取食方式和取食部位来看，以为害茶树嫩梢和叶片的食叶性害虫和吸汁性害虫为主，共达240种，占全部种类的79.47%。
If it is classified with the damaged position on tea plant, the species of pests damaging the shoots and leaves of tea plant are the most, amounting to 240 species, as 79.47% of the total.
综上所述，根域限制抑制了葡萄树体源叶和新梢的生长，却促进库果实的生长。
From all above, root restriction decreased leaf growth, but promoted the berry growth.
综上所述，根域限制抑制了葡萄树体源叶和新梢的生长，却促进库果实的生长。
From all above, root restriction decreased leaf growth, but promoted the berry growth.
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