Heat tolerant cultivar is higher than heat sensitive cultivar in leaf phloem area ratio and leaf sheath duct area ratio, while lower in leaf duct area ratio and leaf sheath phloem area ratio.
耐热品种的叶片韧皮部面积比例、叶鞘导管面积比例大于不耐热品种，叶片导管面积比例、叶鞘韧皮部面积比例则小于不耐热品种。
This series is configured by original imported compressor and high-quality duct designed to ensure more uniform temperature inside a cabinet. The spacious display area can display more commodities.
采用进口原装压缩机配置，高质量的风道设计，使得柜内温度更加均匀，宽敞的陈列面积，可陈列更多的商品。
If the cross section area of the two branching ducts are different, the Included angle on the smaller branch duct against the extended center line is usually bigger.
若分枝管的截面积大小不同，则细支管与母管中心延长线间的夹角较大；
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