the basical features of sand hazard along the railway are eroding ballast, covering track and wearing equipments in desert and semidesert areas.
荒漠、半荒漠地带铁路沙害的基本特征是沙侵道床、埋没轨道、磨蚀设备。
the endemic species distributed in the desert and semidesert regions of the west of inner mongolia.
现知种类主要分布在内蒙古西部至中部的荒漠半荒漠地区。
the desert and semidesert region: total 73 species (89%) (including common species);
荒漠半荒漠区:共计73种(占89%,包括共有种);
the paper recorded the numbers of 4 genus of miridae in desert and semidesert regions in north-west china.
文章记录了我国西北地区盲蝽科中四个属的种类分布状况。