多年以来，港口起重机设计大都将静强度作为主要设计准则。
The static strength has been regarded as the main design standard in port crane design for many years.
弹性静力学主要涉及力和变形之间的物性关系，以及弹性体的失效、与失效有关的设计准则。
Elastic statics mainly relates to the connection between force and transmogrification, elastic body's invalidation, the guide line of design in invalidation.
本文对制动器液压油路进行了动态特性分析，并提出液压系统主要参数和结构设计的准则。
This paper carries out the analysis of dynamic characteristics for hydraulic circuit of the brake, and puts forward the criterion of structure design and main parameters in hydraulic system.
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