The root causes of motorcycle cylinder block wearing are temperature variation and presence of hard abrasive dust.
摩托车发动机气缸磨损的根本原因在于温度的变化和硬质磨粒的存在。
2
The root and rhizome were composed of the epidermis, cortex and vascular cylinder.
根和根状茎都由表皮、皮层和维管柱组成。
3
It was concluded that aerenchyma that formed in the root cortex impeded the radial transport of water in the rootcylinder and decreased water uptake in water-stressed rice plants fed by nitrate.