triangular rule

常见例句

It is proved that a triangular-norm is a rule-union operator;
证明了三角模是规则并算子；
The protractor (3) with a triangular rule is arranged on a board and is fixed on the two sides on the upper part of the compasses through an elastic fixing clip (7).
板面上带有三角尺的量角器（3）通过弹性固定卡（7）固定在圆规的上部两侧。
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Train diagram is replacing gradually the old ways of train traffic control, which relies mainly on one diagram, one pen, one triangular rule and one ruler via telephone communications.
逐步取代了原有的依靠一张图、一支笔、一块三角板、一块橡皮、通过电话传递信息的调度指挥方式。