Its stipe ( stem like structure ) is 3 - 10 ft ( 1 - 3 m ) long.它的柄 ( 类似茎的结构 ) 有1～3 公尺 长.North American fern with a blackish lustrous stipe.带有光亮叶柄的一种北美蕨类.The concentration of and ZR corresponded with stipe growth rate in...
适当的维修管理一般就可以控制住钢构件的锈蚀.Corrosion on steel components can usually be controlled by proper maintenance.在所有表面上都发现了大范围的锈蚀.Extensive corrosion product was found on all surfaces.枪筒已被锈蚀.Rust had eaten out the gun barrel....