byl
- n.比尔
byl-
High concentration of oxygen and high temperature inhibited photosynthesis by 43.26 % and 43.25 % respectively . In the contrast , low level of oxygen stimulated photosynthesis . As oxygen concentration decreased by 1 % , the photosynthesis rate increased byl .
低氧促进光合作用，氧浓度每下降1%，光合强度平均提高1.41%，高温下光合下降量为43.26%±34.44%。
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By studying structural principle of BYL PQ valve , its work principle is introduced in Chapter 2.Chapter 3 analyzes the static performance of BYL PQ valve by building its static model , and studies the disturbing ingredient that affects the static performance of PQ valve .
第三章通过建立PQ阀的稳态数学模型，分析研究了PQ阀内部结构参数和液压参数对其稳态特性的影响趋势。