Design has no theory to support, generally relying on experience or through the "engineering analogy", which seriously hampered the promotion and application of the structure.
设计无理论研究支持，普遍依靠经验或通过“工程类比”，严重制约了该结构的推广与应用。
Design has no theory to support, generally relying on experience or through the "engineering analogy", which seriously hampered the promotion and application of the structure.
设计无理论研究支持，普遍依靠经验或通过“工程类比”，严重制约了该结构的推广与应用。
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