名词制轮木; 煤面防护柱; 制轮杆
sprag
1. 插模钉：層狀腐蝕lamellar corrosion | 插模釘sprag | 查馬克(商品名,壓幫用鋅鋁銅合金)Zamak
2. 制轮木：spraddle 叉开腿站立 | sprag 制轮木 | sprain 扭伤
3. 斜撑：spouter 捕鲸船 | sprag 斜撑 | sprain 扭伤
4. 支柱;挡圈;斜撑;煤面防护柱：SPR石油战略储备 | SPR战略石油储备 | sprag支柱;挡圈;斜撑;煤面防护柱
noun
1. sprag的翻译
1. a wooden prop used to support the roof of a mine
Synonym: pitprop
2. a chock or bar wedged under a wheel or between the spokes to prevent a vehicle from rolling down an incline