本文报道了灵敏面积为300×300mm~2的二维多丝室的结构、工艺以及性能。位置读出是采用扁平延迟线。用~(55)Fe源测得阳极位置线谱半宽度为1.5mm、阴极位置线谱半宽度为2.5mm,并给出了较为清晰的二维成象照片。 This paper reports the structure, process and properties of a two-dimensional multi-filament chamber with a sensitive area of ​​300 × 300mm ~ 2. Position read out is the use of flat delay line. The full width at half maximum of anode position spectrum measured by ~ (55) Fe source was 1.5 mm, and the half width of line spectrum at cathode position was 2.5 mm. A clear two - dimensional image was also obtained.