表四 型号 l l1 l2 b b1 h h1 h2 h3 zg-25s zg-30s zg-60s zg-80s zg-100s zg-200s zg-300s zg-400s zg-500s zg-750s zg-1200s zg-1800s zg-2000s 表五 型号 l l1 l2 l3 …