家用缝纫机 送料方向稳定性测试方法
Household sewing machine—Determination of directional stability

2013-12-31

HOUSEHOLD SEWING MACHINES. DETERMINATION OF DIRECTIONAL STABILITY (DRIFT)
家用缝纫机 方向稳定性（漂移）的测定

1986-07-15

HOUSEHOLD SEWING MACHINES. DETERMINATION OF DIRECTIONAL STABILIYU (DRIFI)
家用缝纫机 方向稳定性的测定（DRIFI）

1985-03-15

HOUSEHOLD SEWING MACHINES. DETERMINATION OF STABILITY OF NEEDLE THREAD TENSION
家用缝纫机 针线张力稳定性的测定

1984-09-15