The bucket theory of economics utilized in the evaluation of system qualities and the black box method in cybernetics being took as an important method of system study were expounded superficially.
就经济学中的木桶理论运用于系统品质的评价和控制论中的黑箱方法，作为研究系统的重要方法，作了粗浅的论述。
Based on the theory of solid geometry, a survey method to measure the bucket foundation installation error and ensure the installation precision is presented.
提出了根据空间立体几何原理对桶形基础平台进行桶基安装误差测量并保证安装精度的方法。
The constitutive relationship of bucket foundation was analyzed by the principle of J2 flow theory and isotropic based on a deformable distinct element method.
利用J 2流动理论各向同性硬化原理，结合离散元方法，建立筒型基础土体本构关系。
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