According to adjustable head fall mixer, the effect of mixer parameters on head loss was studied in the model experiment.

通过模型试验，研究可调式跌水网格混合器主要设计参数对水头损失的影响。

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Taking mixing uniformity as assessment index, the mixing performance and mechanism of adjustable head fall mixer with grids were studied in a plant scale experiment.

以混合均匀度为评价指标，通过生产性试验研究了可调式跌水网格混合器的混合性能及其机理。

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Pneumatic drive, linear feed. Adjustable head can be pulled to set positions by drive motor.

采用气压传动，水平直线式工进方式，运动机头由电机拖动行走定位。

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It comes in two parts: there's an adjustable cradle that fixes the device to your head, and the computer itself is in a metal bar that curls around the side of your head.

BBC: Motorola unveils a computer that straps onto your head