Energy is an important material base for human-kind's existence and production.
能源是人类赖以生存和进行生产的重要物质基础。
Porous solid mass is an important material base in the formation of debris flow.
松散固体物质是泥石流形成的重要物质基础。
The bronze musical instruments, as the one with fixed pitch, along with its musical temperament design, pitch tuning, it became an important material base to pursue Song new music system.
作为固定音高的青铜乐器，编钟的铸制与音律设计、音高调试，成为宋代新乐议制和推行的重要物质基础。
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