@article{oai:jaxa.repo.nii.ac.jp:00034742,
 author = {村川, 潔 and Murakawa, Kiyoshi},
 issue = {7/8},
 journal = {東京大學理工學研究所報告},
 month = {Jan},
 note = {The heat-treatment of leaded brass sheets has been studied in order to enhance the machinability for the case in which they are used as watch gear materials. It has been found that the machinability is considerably improved when the sheets are given an anneal at about 700℃, followed by a 78-82% reduction by rolling. The sheet prepared :by-this process has a microstructure very similar to Fig.2a or b., 資料番号: SA3406582000},
 pages = {218--222},
 title = {可削性黄銅板(時計齒車用黄銅板)(金屬學)},
 volume = {3},
 year = {1950}
}