Adding a rotor blade (it had five on the main rotor and four on the tail) and using a modified exhaust system were among them.
增加一个桨叶(主桨有5个叶片，尾桨有4个)，并使用了改进的排气系统。
The helicopter has a five-blade main rotor and a four-blade tail rotor.
直升飞机有一个五浆叶主旋翼和一个四浆叶尾旋翼。
Like the Z-9B, the Z-9C also features a modified 11-blade Fenestron faired-in tail rotor with wider-chord, all-composite blades instead of 13 all-metal blades as in as 365n1.
如同Z - 9b, Z - 9c也具有的特征是一个改进11浆叶涵道减阻内置尾螺旋浆，采用宽弦全复合浆叶而不是像AD 365n1型一样的13片全-金属浆叶。
The Z-9B variant features a modified 11-blade Fenestron faired-in tail rotor with wider-chord, all-composite blades instead of 13 all-metal blades as in as 365n1.
Z - 9b型特点是一个改进11浆叶涵道尾桨，减阻内置螺旋浆采用宽弦、全-复合浆叶而不是像在AS 365n1型中的13片全-金属浆叶。
The Z-9B variant features a modified 11-blade Fenestron faired-in tail rotor with wider-chord, all-composite blades instead of 13 all-metal blades as in as 365n1.
Z - 9b型特点是一个改进11浆叶涵道尾桨，减阻内置螺旋浆采用宽弦、全-复合浆叶而不是像在AS 365n1型中的13片全-金属浆叶。
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