短语词组短语sheathing test -piece 护套试样test -piece thickness 试件厚度fluidity test bar piece 流动性直棒形试片;流动性直棒形试片英语wedge test -piece 三角试块fuse arming test experiment piece 条形保险丝Refractory test -piece preparation 耐火试样制备 返回 test piece