relation n. 1.說話,敘述,報告;故事。 2.關系,聯(lián)系;〔pl.〕(利害)關系,交情;〔pl.〕國際關系。 3.親戚關系;親戚。 4.【法律】告發(fā);追溯效力。 5.比率,比數(shù)。 6.〔pl.〕男女關系;性關系。 diplomatic relation 外交關系。 the relations of production 生產關系。 social relations 社會關系。 the relation between cause and effect 因果關系。 the relation of father and son 父子關系。 Is he any relation to you 他是你的親戚嗎? bear no relation to =be out of all relation to 和…無關,和…完全不稱。 The outlay seems to bear no relation to the object aimed at. 這費用似乎和預期目的完全不相稱。 have relations with 和…有(某種)關系。 have relation to 有關;和…有關系(The report has relation to a state of things now past. 這個報告是關于現(xiàn)在已經過去的事件的)。 in [with] relation to 關于…,就…而論。 make relation to 提及…,讀到…。 relation by marriage 姻親,裙帶關系。
The dynamic force - displacement relation curve is of crucial important to the design and operation of mechanical impact devices . using one - dimensional wave mechanics and characteristic line theory , this paper presents a testing method for determination of dynamic force - displacement relation curve from one - point strain measurement on an elastic rod endface . the principle of measurement , data processing method and experimental results for penetration into granite are discussed . 4figs . , 5refs 沖擊載荷下彈性桿端的作用力-位移關系曲線是沖擊機械系統(tǒng)研究的重要內容.基于一維波動力學方程,應用特征線方法,探討了已知一點應變求取彈性桿端的作用力-位移曲線的測試原理與數(shù)據(jù)處理方法,以及在花崗巖上沖擊鑿巖機具的測試結果,對一點應變測試法的可行性進行了論證.圖4 ,參5