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The low cost track, which consists of the traditional wide-sleeper tack, ballast bed with rubber bits and the elastic packing material between sleepers, is a new type with three-dimensional elasitic support. 摘要介绍以传统的宽枕轨道框架、碎橡胶道床、枕端无遮挡弹性定位和枕间弹性材料密封装配成的，具有三维弹性支撑的碎橡胶道床轨道。
CONSTRUCTION TECHNIQUE FOR BALLAST BED ON HIGH SPEED RAILWAY 高速铁路有碴道床施工工艺的探讨
Application of Vibration-separating Technology for Spring Quality Ballast Bed 弹簧质量道床隔振技术的应用
The Low Cost Wide-Sleeper Ballast Bed Track with Damping Rubber Bits 廉价减振型宽枕碎橡胶道床轨道
Construction Method for Lower Part Work of Ballast Bed in Overhaul of OCS 石质路基区段接触网下部工程大修的施工方法
The brook warbled over its rocky bed. 小溪潺潺流过多石的河床。
To fill(a railroad bed) with or as if with ballast. 铺沙石用或似用沙石铺（铁路路基）
Pig iron used as permanent ballast. 压载铁做为永久性压舱物的生铁
The ship was furnished with ballast. 船上装了压舱物。
She rushed off to work leaving her bed unmade. 她匆忙去上班连床都没铺好。
A mosquito netting completely surrounds our bed. 一顶蚊帐把我们的床完全围住了。
The ballast placed in the ship can keep the ship steady. 放在船上的压舱物可以保持船的平稳。
It was hard work getting the children off to bed. 哄孩子们去睡可不是容易的事。
I threw off my clothes and tumbled into bed. 我脱掉衣服倒在床上便睡了。
I usually go to bed at half past ten. 我通常十点半睡觉。
He lay face downwards on his bed. 他俯卧在床上。
Please unplug the TV before you go to bed. 临睡前请拔下电视机的插头。
She covered the bed with an old faded grey blanket. 她在床上铺着褪了色的灰色旧毯子。
The ballast may be thrown out to make the balloon go higher. 沙袋可以拋掉以使气球飞得更高。
He has neither prepared his lesson nor gone to bed. 他没有准备功课也没有睡觉。