Results striation marks are unique to the particular claw-hammer which made the mark. Conclusion claw-hammer striation marks can be used for claw-hammer identification.
Each evening he came home, eager to take up his crosscut saw or clawhammer.
每天晚上回家时,他都急忙拿上横锯或拔钉锤。
3
Described the technological process of the new and the old forging die for the clawhammer, introduced the working principle of the movable die and die structure.