Adopt the new processing technology, such as processing expansion break technology on connecting rod, crankshaft car pull and high-speed milling machining, etc.
采用新的加工工艺：如加工连杆采用胀断工艺，加工曲轴用车拉和高速外铣加工等。
2
If the change rules generally to replace the expansion tyre, Zhang Xin, screw rod and slot.