例句與用法

1. the build-up welding of the meshing surfaces of big gear wheels : during operations of the big driving gears of big rolling mills and squeezers, the meshing surfaces wear easily and form cavities due to the squeezing force and attrition with the thinning of the gears resulting in the rejection of the gear wheels
   大齒輪咬合面堆焊：大型軋機和壓榨機的傳動大齒輪在工作過程中，齒的咬合面產(chǎn)生大的擠壓力和磨擦力易磨損和形成凹坑，齒厚減薄，因而報廢。
2. the surface material is liable to erosion wear with high-velocity sediment-laden flow, hi this paper, sand wear mechanisms are discussed and some effects of significant flow factors on material wear are analyzed; the possibility of preventing erosion wear with aeration is proposed; based on test data, the formula for calculating the concrete material wall surface wear rate is derived . it is indicated that the wear rate is related to the air concentration, the strength of material, the flow velocity and the sediment content . it is shown that wear rate can be reduced with the help of flow aeration
   分析了空蝕與磨蝕的不同物理特征；探討了沙粒磨蝕機理，提出了影響磨蝕vi河海大學博士學位論文一的因素；研究了摻氣抗磨的可能性：建立了混凝土材料壁面磨蝕率的計算公式；說明含沙水流對固壁材料的磨蝕率隨摻氣濃度、材料強度的增大而減小，隨水流流速、含沙量的提高而增大；利用摻氣可有效地降低過流表面的泥沙磨蝕率。