telescope tube meaning in English

伸缩套管
望远镜筒
望远摄像管

When light passes through an obstacle e . g . the rim of telescope tube , its traveling direction deflects slightly
又如果在某一方向的重力变大或变小，这个人或物件便会向重力较强的方向加速。
With the research object of overbank soft clay near the yiluo river , by means of pack drain to accelerate the consolidation of the soft ground and analysis of fourteen selected representative observation section , in the same time with the help of such testing apparatus as settlement plates , deflection inclinometer , piezometer , telescoping tube , my study not only evaluate the effect of pack drain ' s quickening up the consolidation of soft ground impersonalily and scientifically but also sum up the settlement disciplination of overbank soft clay after more than one years ? observation of settlement and stability continuously
本文以伊洛河河滩相软土为研究对象，利用沉降板、测斜管、孔隙水压力计、分层沉降标等多种测试仪器，选取14个有代表性的观测断面，进行了一年多的沉降与稳定观测。通过对观测数据的分析，进而对袋装砂井加速河滩相软土固结效果进行了客观、科学的评价，同时推算了沉降系数m _ s和固结度参数，并对河滩相软土的沉降规律进行了分析。