I'd invented an automatic gate closer out of cement-filled tires, a solar cooker that didn't work very well out of an umbrella and tinfoil, baking-pan alarms to entrap my siblings.
我曾用水泥填充的轮胎、雨伞和锡箔以及报警器制作了一个自动关门器。
The product flow from the hopper to the feed pan can also be controlled by an adjustable slide gate.
产品的流动也可以通过可调滑动门进行调节。
The product flow from the hopper to the feed pan can also be controlled by an adjustable slide gate.
产品的流动也可以通过可调滑动门进行调节。
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