一、前言我們过去測量水庫淤积砈玫姆椒ㄓ小暗匦瓮挤ā焙汀疤锥厦娣ā薄U庑┓椒ㄓ捎诓饬考坝嬎懵闊?且精度较差,不但不能为目前大規模羣众測驗所采用,而且远不能滿足水土保持科学研究工作的需要,因此,在去年大跃进中为了改进工作并为羣众观測打下基 First, the foreword We used to measure the reservoir silt 砈 Rose Pepper ㄓ small dark 匦 urn squeeze ā baked Ting scar cone Xia Di ā thin U 庑 ┓ pepper ㄓ take 诓 诓 饬 test dam 嬎 懵 wide and poor accuracy, not only can not Large-scale mass test used, and far can not meet the needs of scientific research work in soil and water conservation, therefore, in the Great Leap Forward last year in order to improve work and laid the groundwork for mass observation