Constant acceleration test is an important testing item in reliability testing, the covering up sand and the sticking on magnet are used widely which are important for this testing item.

恒定加速度试验是可靠性试验中一种重要的试验项目，埋沙法和磁贴法作为该试验项目的两种重要方法已经被广泛使用。

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The soil consists of a chalk subsoil, topped by a covering of rubble that is made up of sand, lignite, marl, loam and clay.

WSJ: Reflections on Champagne