sleeper screw meaning in Chinese

枕木螺丝

Railway fixed equipment . sleeper screws for flat - bottom rails
铁路固定设备.宽底式普通道钉
Railwau fixed equipment . sleeper screws for double - head rails
铁路固定设备.双头钢轨用枕木螺钉
Railway fixed equipment . sleeper screws with variable thread
铁路固定设备.带可变螺纹的枕木螺丝
Railway fixed equipment . sleeper screws with seating for flat - bottom rails
铁路固定设备.平轨用带垫枕木螺钉
Railway fixed equipment . sleeper screws for wood sleepers . characteristics , specifications and acceptance conditions
铁路固定设备.铁路固定设备.枕木用螺纹道钉.性能规格和验收条件