例句與造句

1. then subtract these improper subtrees by fragmentactivateo algorithm, and build proper minimal active fragments set
   再由搜索活動條件片斷算法減去不符合要求的子樹，建立滿足用戶輸入的最小活動片斷子集。
2. a new e . coli promoter-probe vector phn1005 was constructed by using a red-shift enhanced gfpmut3 as reporter gene and showed the following characters : 1, bamhi at the 5 " end of gfpmut3 structure gene could be used to clone promoter-active fragment and the strength of promoter could be quantitatively assayed . 2, a rrnbtlt2 terminator from rrna gene at the 3 " end of gfpmut3 could permit clone strong promoter . 3, another rrnbt1t2 terminator was inserted upstream bamhi to prevent reading through of promoters from puc19
   進一步以紅移且熒光強度提高21倍的gfpmut3為報告基因，構(gòu)建了大腸桿菌啟動子探針載體phn1005，該載體上gfpmut3結(jié)構(gòu)基因5’端的bamhi位點可用來克隆具有啟動子活性的dna片段并定量分析插入的啟動子強度；其3’端含rrnat1t2終止子，可允許克隆強啟動子；在bamhi上游同樣插入rrnat1t2終止子以防止載體puc19上的啟動子的轉(zhuǎn)錄通讀；gfpmut3結(jié)構(gòu)基因上游還插入一段內(nèi)含子序列使正反六種讀碼框的翻譯均可被終止，可保證gfpmut3以正確的讀碼框翻譯。
3. It's difficult to find active fragment in a sentence. 用active fragment造句挺難的