利用张量和模代数知识,构造出了自由丛的浸入子丛和任一模丛的浸入子自由丛.得到一般模丛都能够成为一个自由丛的浸入子丛;同时任一模丛也能够有一自由丛(或投射丛)是它的浸入子丛;还给出了投射丛转化为自由丛的条件.
The immersed subbundles of free bundles and the immersed free subbundles of any module bundles are constructed, by using theoretics of tensor and module algebra. It is indicated that any module bundles can becomes a immersed subbundles of free bundles, and that there is a free bundles (or projective bundles) is a immersed subbundles of any module bundles also. In particular, the condition which projective bundles change into free bundles is given.