A.0.5%~0.1% B.0.5%~1% C.1%~2% D.0.05%~0.5%
A.走向進圖面折彎90° B.走向進圖面折彎45° C.走向出圖面折彎45° D.走向出圖面折彎90°
A.50° B.半熔化 C.長時間熔化 D.短時間熔化