secondary wall meaning in English
次级细胞壁
次生壁
次生细胞壁
后生壁 当细胞增大至极大时，细胞内壁立即加厚，而于细胞内腔形成新细胞壁共有三层，后生壁之主要成分为纤维素及半纤维素，并含少量之木质素
Examples
- Lignin is a characteristic component of secondary walls .
木质素是次生壁成份的特征。 - Light microscopy has also been useful in studies on the secondary wall of the cotton fiber .
光学显微镜还可以用来研究棉纤维的次生层。 - It may develop by thickening of the secondary walls of parenchyma cells , or it may arise directly from meristematic cells
它们可能由薄壁组织的细胞壁次生加厚而成，也可能直接来自于分生组织细胞。 - The bump height and secondary wall - impingement distance were discovered to play an important role in producing a secondary space jet , reducing the quantity of fuel stuck on the wall and forming lean mixture , and their suitable values being 1 . 0 - 1 . 5mm and 0 - 2 . 0mm respectively
发现bump高度及二次撞壁距离对撞壁油束形成二次空间射流、减少壁面燃油堆积以及形成稀混合气有重要作用，且发现bump的高度和二次撞壁距离分别为1 . 0 1 . 5mm和0 2 . 0mm比较合适。 - Moreover , the secondary wall - impingement distance should be properly reduced in order that the bump play a part in the formation of lean mixture with the increase of environmental pressure or density owing to both the increase of air entrainment , momentum losses and the decrease of the spray tip velocity and penetration
而且当压力或密度较高时，由于喷雾的空气卷吸量及动量损失增大，贯穿速度降低及贯穿距减小，为使bump发挥作用，应适当减小二次撞壁距离。