FFT is a very important algorithm in digital signal processing, and butterfly operation modules are important construction modules in FFT processor.
FFT是数字信号处理中的一种非常重要的算法，蝶形运算模块是FFT处理其中的重要构造模块。
Stem extensions can BE furnished to permit remote operation of butterfly valves in any required length.
配备所需长度的阀杆延长件，可以对某个蝶阀进行远程操作。
Structure Designed is similar to hard sealing of three - eccentric of butterfly valve, with convenient operation, without friction opened and leakage, long life.
结构设计类似三偏心硬密封蝶阀，具有操作轻便、开启过程无磨擦、零泄漏、寿命长等优点。
Structure Designed is similar to hard sealing of three - eccentric of butterfly valve, with convenient operation, without friction opened and leakage, long life.
结构设计类似三偏心硬密封蝶阀，具有操作轻便、开启过程无磨擦、零泄漏、寿命长等优点。
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