A mathematic model is set up by probabilistic method for analyzing concrete crack in early age, which is tested by the observation results of a concrete retaining wall case.
利用概率的方法，建立分析早龄期混凝土开裂的数学模型，并利用一实际的混凝土挡土墙工程观测结果进行验证。
Through the development practice of ten years and more, it is verified that this set of observation system and method are effective in practice.
经十几年开发实践证明，这套观察系统和方法是行之有效的。
To ensure the reliability of the precision of photograph control points by continual survey, a method is recommended that increases the appropriate numbers of the observation set and promotes …
为保证连测的像控点精度的可靠性，本文提出了按交会基线长度和交会图形强度，增加适当测回数，提高测角精度的方法。
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