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气体交换生长室试制成功了,二氧化碳调控系统调试好了,红外气体分析仪校正过了,苹果树苗达到了要求的高度……,精心策划了整整四个月的实验,今天就要开始了！ 我开启了电源开关。 怎么搞的！空气流量远远低于设计值。抽气机工作正常,那么是某个部位在漏气? 哦！原来是湿度控制瓶的橡皮塞松动。我使劲按了按瓶塞,流量计的钢球果然上升到了要求高度;但只要我一松手,它就开始下降。换了好几个橡皮塞,仍然无济于事。显然是瓶内压力过大,足以克服橡皮塞与瓶口之间的摩擦力而冲开瓶塞。看来这种为小流量设计的控制瓶无法在这种大流量试验中使用。
Gas exchange growth room trial success, the carbon dioxide control system commissioning is good, infrared gas analyzer calibrated, apple sapling reached the required height ... ..., carefully planned a full four months of experiments, we must start today! I turned on the power switch. How to engage in! Air flow is far below the design value. Exhaust gas machine is working properly, so is a certain part of the leak? Oh! The original is the rubber plug of the humidity control bottle loose. I press hard to press the stopper, the ball of the flowmeter really rose to the required height; but as long as I let go, it began to decline. Change several rubber plugs, still no use at all. Obviously the pressure inside the bottle is too large, enough to overcome the friction between the rubber stopper and the bottle and open the cork. It appears that such a control bottle designed for small flow can not be used in such large flow tests.