- notching punch
- 凹口: hag; recess; notch; cove
- 冲头: head; formed punch; piercing ...
- 凹口冲辉验: impact test on notched test bar; notched bar impact test
- 凹口冲击试验: notched bar impact test
- 凹口: hag; recess; [电学] notch; cove◇凹口比 notch ratio; 凹口板 notch plate; 凹口车床 gap lathe; 凹口试杆 notched bar; 凹口冲头 notching punch; 凹口管节 socket union; 凹口剪切机 gap shears; 凹口锯 concave saw; 凹口敏感比 notch sensitivity ratio; 凹口销 notch pin; 凹口研磨机 gap mill
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