常見(jiàn)例句雙語(yǔ)例句Objective To explore the variation frequency and base composition characterization of mitochondrial DNA (mtDNA) control region in human beings.目的探討人類(lèi)線粒體基因控制區(qū)的多態(tài)頻率和變異類(lèi)型。The long-chain base composition of several canine intestinal glycosphingolipids have been determined by gas chromatography and gas chromatography-mass spectrometry.利用氣相色譜、氣相色譜-質(zhì)譜聯(lián)用等方法測(cè)定了狗小腸鞘氨醇糖脂中的長(zhǎng)鏈堿組成。Influence of neighboring base composition on nucleotide substitution bias was observed in the sequence of nuclear pseudogenes and chloroplast non-coding and coding sequences.核苷酸替換偏好性受其相鄰堿基組成的影響現(xiàn)象已經(jīng)在核基因組假基因序列和葉綠體基因組的非編碼序列和編碼序列中發(fā)現(xiàn)。權(quán)威例句The rapid upgrade wave triggered by autumn iPhone launches mean that the composition of the corporate device base can change a lot faster than it used to back in 2009 or 2010.FORBES: Major Shifts Ahead in Mobile Data Consumption? 返回 base composition