The wheat leaf is the main organ for photosynthesis. The decline of assimilation induced by leaf senescence may limit yield potential.
叶片是小麦进行光合作用的重要器官，其衰老引起的叶片同化功能减退限制了小麦产量潜力的发挥。
It is the fine cementation of microcracks so as to reduce or eliminate the stress concentration on their ends intensively. Thus, the limit yield of rock mass and its strength are both enhanced.
微细裂隙的良好胶结，使其端部应力集中被降低或消除，岩体屈服极限增大，强度提高。
Fatigue strength is less than static stress strength such as elasticity limit, yield strength.
疲劳强度低于弹性极限或屈服强度等静应力强度。
Fatigue strength is less than static stress strength such as elasticity limit, yield strength.
疲劳强度低于弹性极限或屈服强度等静应力强度。
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