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backpitch

n. [机] 背节距；[机] 反螺旋

1、[机]背节距

... 背焊接 back welding 背节距 backpitch 背节式水轮机 backpitch wheel ...

2、[机]反螺旋

...陡螺旋 steespin反螺旋 antispin; backpitch; inverted spin呼吸,螺旋 spiro ...

backpitch wheel[机] 背节式水轮机

backpitch h背节距

能源科学技术

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