ply: vt.(plied)1.勤苦经营，努力从事；勤用(器具、武器等)。2.拼命给…加(煤、柴等)；硬逼人(吃菜等)；死劝，硬要 (with) (提出质问等)攻击；缠扰。3.(船等)来回于，往返于。 短语和例子ply an oar 使劲划。 ply one's books 用功读书。 ply a man with liquor 硬劝人喝酒。vi.1.(船、马车等)来往，来回兜揽
Tyres and wheels - tyres - agricultural tractor and machine tyres - specification for classification codes and nomenclature for ply rating marked series tyres 轮胎和车轮.第1部分:轮胎.第4节:农用拖拉机和机械轮胎.第3a小节:层片额定标记系列轮胎的分类代码和术语规范
2.
Tyres and wheels - tyres - agricultural tractor and machine tyres - specification for ply rating marked series tyres for log skidders - agricultural tractor and machine tyres specification for ply rating marked series tyres for logging and forestry service 轮胎和轮子.轮胎.农用拖拉机和农机轮胎.集材拖拉机用标明线网层额定值的系列轮胎规范
