The engineering practice shows: the system is easy to operate and to apply in engineering.
实践表明，该系统易于操作，便于工程应用。
In developing a design the engineer must apply his knowledge of engineering and material science.
在进行设计时工程师必须应用自己在工程学和材料学方面的知识。
In developing a design the engineer must apply his knowledge of engineering and material science.
在进行设计时工程师必须应用自己在工程学和材料学方面的知识。
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