General Design Theory

Axiomatic design is a general design theory in the design field, using the four domains and two design axioms it generalizes abstractly basic role of design field.

公理化设计是设计领域的通用性设计理论，它以四个域和两条设计公理抽象地概括设计领域的基本规律。

This essay discusses the primary theories and means general design theory, the principle of design and the system design theory, Which are three schools of thought in the modern design theory.

论述现代设计理论的三大流派一般设计学、设计原理、系统设计论的主要理论与方法，并分析、比较各流派异同点及应用特点，以利于更好地将现代设计理论与方法应用于工程设计。

Caliper board depends on the diameter of pipe diameter, and the need to consider the design of pipe diameter changes, general for the minimum 95% of the pipe inner diameter theory.

测径板的直径取决于所测管段的内径，并需考虑到该管段的变径设计，一般为所测管段最小理论内径的95%。