The adopted technical program includes that velocity of movement is alternate during pasture grass compression process.

所采取的技术方案包括:活塞在牧草压缩过程中的运动速度是交变的.

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Forms and determined the new technical program, must take the science thought method as the instruction.

形成和确定新的技术方案, 要以科学的思维方法为指导.

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