The practice demonstrates the validity of the system.
实践证实了该系统的有效性。
The practice demonstrates that the design is successful.
实践证明设计是成功的。
The production practice demonstrates the feasibility of the drawing process.
生产实践验证了该拉延工艺的可行性。
The production practice demonstrates the feasibility of the drawing process.
生产实践验证了该拉延工艺的可行性。
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