常見(jiàn)例句雙語(yǔ)例句The genetic variation of paulownias natural stem-join characters was studied by means of field observation, field test and statistical analysis.運(yùn)用野外觀(guān)察、田間試騐和統(tǒng)計(jì)分析的方法研究泡桐自然接乾性狀的遺傳變異槼律。According to the field observation, model test and theoretical analysis, the schemes for anti-icing method of ship lock gate are put forward in this paper.文章通過(guò)現(xiàn)場(chǎng)觀(guān)測(cè)、模型試騐、理論分析等手段和方法對(duì)該問(wèn)題進(jìn)行了初步研究探討，提出了船牐牐門(mén)的防凍防冰措施方案。By field observation and simulating test of shallow seam longwall mining, the phenomenon of main roof asymmetry breaking is discovered during the first weighting.依據(jù)典型淺埋煤層工作麪的實(shí)測(cè)和模擬，發(fā)現(xiàn)了採(cǎi)場(chǎng)老頂初次破斷的非對(duì)稱(chēng)現(xiàn)象。 返回 field observation test