Aircraft ground support equipment - General requirements - Part 4: noise measurement methods and reduction.
飞行器地面支持设备。一般要求。第4部分：噪声测量方法和噪声降低。
A poor ground degrades system performance and can cause noise issues.
一个不好的地面会降低系统性能并且引起噪音发生。
The effect of ground motion noise on the network construction is analyzed.
指出了地动噪声分析对台网建设的作用。
Let the heel touch the ground first, then the full foot, avoiding making any noise.
要让脚跟第一个先接触到地面，然后是整个脚，避免出任何声音。
Then I felt the ground shake and heard a loud noise like thunder.
那时我觉得地面在摇晃，并听到雷鸣般的巨响。
Then I felt the ground shake and heard a loud noise like thunder.
那时我觉得地面在摇晃，并听到雷鸣般的巨响。
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