Recently, an innovative hypercube-variant network called bicube, denoted as $B{Q}_n$, has been proposed to possess both short diameter and symmetry advantages. Unlike other existing hypercube-variant networks, they lose their symmetry in pursuit of short diameters. For solving the problems of fault-tolerant transmission and secure message distribution in a reliable network, one solution suggested a dual-CIST (two completely independent spanning trees) to design a multi-path routing (e.g., a recently proposed secure-protection routing). We can make the construction using the standard arrangement guideline (SAG) like the hypercubes to obtain a dual-CIST with a diameter of $2n-1$ on $B{Q}_n$. This paper proposes a newly generic adjustment scheme (GAS) for reducing the diameter of the dual-CIST under this construction. As a result, the diameter of $T_i$ for $i=1,2$ we constructed for $B{Q}_n$ are as follows:$\mathrm{\text{diam}}(T_i)=\{\begin{array}{cc}7\hfill & \text{if }n=4;\hfill \\ 2n-2\hfill & \text{if }n⩾5\text{ and }\mathit{\text{n}}\text{is odd};\hfill \\ 2n-3\hfill & \text{if }n⩾6\text{ and }\mathit{\text{n}}\text{is even}.\hfill \end{array}$

最近，一个创新的超立方变体网络称为 bicube，表示为 $乙{问}_n$，已被提议同时具有短直径和对称优势。与其他现有的超立方变体网络不同，它们在追求短直径时失去了对称性。为了解决可靠网络中容错传输和安全消息分发的问题，一种解决方案提出了双CIST（两个完全独立的生成树）来设计多路径路由（例如，最近提出的安全保护路由） . 我们可以像超立方体一样使用标准排列指南 (SAG) 进行构建，以获得直径为$2n-1$ 上 $乙{问}_n$. 本文提出了一种新的通用调整方案（GAS），用于在这种结构下减小双 CIST 的直径。因此，直径为${吨}_{\mathrm{一世}}$ 为了 $\mathrm{一世}=1,2$ 我们为 $乙{问}_n$ 如下面所述：$\mathrm{\text{直径}}({吨}_{\mathrm{一世}})=\{\begin{array}{cc}7\hfill & \text{如果 }n=4;\hfill \\ 2n-2\hfill & \text{如果 }n⩾5\text{ 和 }\mathit{\text{n}}\text{很奇怪};\hfill \\ 2n-3\hfill & \text{如果 }n⩾6\text{ 和 }\mathit{\text{n}}\text{甚至}.\hfill \end{array}$