That jeep has four cylinders.那辆吉普车有4个汽缸.Lead weights and air cylinders encumbered the divers as they walked to the shore.潜水员向海岸走去时，铅坠和氧气罐使他们步履维艰。Cylinders must be cleaned thoroughly after the honing or Boring operation.镗...
They are spherical ( coccoid ) or form long microscopic filaments of individual cells.通常是球状的 ( 球菌样的 ) 或长微纤丝的单个细胞.Cytoskeletal intermediate filaments appear to impart tensile strength to the cell cytoplasm.细胞骨架的中间丝提供了细胞质伸...