... r级绝对动差 rth absolute moment 七点规则rule of seven 符号规则 rule of sign ...
2
?七的原则
...，在起草材料大纲时，需注意两件事： 第一，绝对不能将word 档案直接贴在PowerPoint 里面，而必须遵守 七的原则 (Rule of Seven),也就是每页不能超过七个要点，每个要点尽 量不要超过七个字。
双语例句
1
Thus his revenue was greatly increased and it provided a strong material base for him to estadlish feabal seperationist rule and to surge "armed rebellion ofseven countries".
大大地增加了他的财政收入，为他建立封建割据，掀起“七国之乱”提供了雄厚的物质基础。
2
As a rule we deliver within seven days of receipt of order.
一般我们在接到订单后七天内发货。
3
The civil service has a rule that there should be seven desks for every 10 workers - you do not need to be a mathematical genius to see the charm of this potential cost saving of 30 per cent.