For the diameters ratios, the stanchions pipe to ball is approx 0.6, top rail to ball is approx 0.5, mid rail to ball is approx 0.4.是什么意思_For the diameters ratios, the stanchions pipe to ball is approx 0.6, top rail to ball is approx 0.5, mid rail to ball is approx 0.4.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句