如果我们想要添加另外一个选项——例如，Submitted——布尔型属性，它拥有两个值true或者false，就不再需要提供这个设计方法了。
If we want to add another option — for example, Submitted — the Boolean attribute, which allows two possible values true or false, does not accommodate this design approach anymore.
对DF 11型内燃机车按单司机值乘进行了改进设计，介绍了改进原则、工作原理和改进方案。
The improvement design is carried out for DF11 diesel locomotive with single driver operation. The improvement principle, working principle and program are introduced.
提出了并联型混合动力汽车的混合度设计方法，重点讨论混合度设计的约束条件、边值条件及其计算方法。
Aiming at a parallel hybrid electric vehicle (HEV), a design method of degree of hybridization (DOH), mainly about the constraint, side value condition and compute method of DOH was introduced.
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