tenure: n.1.(财产、职位等的)占有，保有，享有。2.占有期间。3.占有条件。4.(土地的)使用(权，期)，所有权。短语和例子collective land tenure 土地的集体所有权。 during his tenure of office 他在职期间。 one's tenure of life 寿命。 He holds his life on a precarious t
land tenure: 土地年期；土地批租期；土地租用权；土地保有权土地使用期限土地使用权土地所有制土地占有制土地租佃租地制度
Various diseases in highway bridge can arise after certain tenure of use , and it is very important to evaluate the actual bearing capacity and disease degree of the bridge in bridge maintenance and highway management 公路桥梁经过一定使用年限，难免会出现各种病害，此时如何评定这些桥梁的实际承载能力及病害程度，在桥梁养护和公路管理工作中极为重要。
