(a minimum multiplicity of zero means that the input or output is optional).
(若是某个输入或输出的最小增殖次数为零，说明它是可选的)。
Figure 6 shows the second approach, which USES only a single input and output criterion, but sets the minimum multiplicity of all disconnected inputs and outputs to zero.
图6显示的是第二种方法，该方法只使用单个输入和输出条件，但它会把所有未连接的输入和输出的最小增殖次数设置为零。
The pattern in Figure 20 shows the first solution, where the minimum multiplicity of item D as input of Task 4 is set to zero.
图20中的模式显示的是第一种解决方案，在其中，项目D被作为Task4的输入，它的最小增殖次数被设置为零。
First, some conditions for the existence of a multiple periodic solutions are given and the multiplicity problem for zero solution of some concrete equations is investigated as applications.
提出未扰动系统出现多重周期解的条件，并给出了一些特殊方程零解的具体重数作为应用；
First, some conditions for the existence of a multiple periodic solutions are given and the multiplicity problem for zero solution of some concrete equations is investigated as applications.
提出未扰动系统出现多重周期解的条件，并给出了一些特殊方程零解的具体重数作为应用；
应用推荐