Sandite
01
砂胶, 提高牵引力的物质
a substance applied to train tracks to improve traction, helps prevent slippery conditions caused by fallen leaves and other debris
例子
Train operators apply sandite strategically to maintain safe speeds on curves and slopes.
列车操作员战略性地应用sandite以在弯道和斜坡上保持安全速度。



























