求翻译：M为DL2000bpMarker，A1、A2分别为双久红桃、川中岛白桃PL-A引物扩增片段，B1、B2分分别为双久红桃、川中岛白桃PL-B引物扩增片段。是什么意思？

m is dl2000bpmarker, a1, a2, respectively, amplified fragment Shuangjiu hearts, Kawanakajima white peach pl-a primer, b1, b2, respectively for Shuangjiu hearts, Kawanakajima white peach pl-b primers amplify a fragment.

In 2000 M DL bpMarker A 1, 2, respectively, A for double-long cherry, peach, white island - A PL lead B expand fragment 1, and 2 respectively B for double-long cherry, peach, white island - B PL lead expanded fragment.

M is DL2000bpMarker, A1, A2 respectively be in the double long hearts, Sichuan island white peach PL-A directs the thing to expand increases the fragment, B1, the B2 minute respectively be in the double long hearts, Sichuan island white peach PL-B directs the thing to expand increases the fragment.

M DL2000bpMarker,A1, A2 respectively two-long red peach, peach PL-A chuanzhongdaobai primer-amplified fragment, B1 and B2 respectively to two-long red peach, peach PL-B chuanzhongdaobai primer-amplified fragment.

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