1982吃货一枚
手工翻译：The Chemistry Teacher showed us an interesting experiment today: the production and application of carbon dioxide.We excitedly watched as the teacher conducted the experiment.A few marbles were put into the cube and then a few milliliters of hydrochloric acid were dropped in.Then the mixture started to boil like boiling water and numerous bubbles were generated.Then the mouth of the tube was plugged with the cork with catheter and a small piece of purple paper called litmus was soaked and put at the mouth of the catheter.All at a sudden the paper turned red!Then the catheter was inserted into a bottle of clear climewater.It was not long before some white substance appeared and the liquid turned to be like the milk we drink.The teacher told us that the gas produced had been carbon dioxide and I felt to have learned a lot in this class!
无敌炒米饭
看看行不行？Piston pumps are reciprocating motion of the piston and the common role of atmospheric water drawn from the lower the height. After the finish of the Robust beverage bottles and other Annex can produce a model of piston-type pumps. 1. 1 is a schematic work with Robust bottle production pumps model appearance map, the mouth of the bottle there is a one-way valve inlet. I opened the bottom of a bottle, then from a pipe, connected to the tube on the syringe. I opened a bottle as a central outlet, outlet connected to a water valve. When pulling the piston syringe, the bottle pressure decreases, water pressure from the inlet pressure to when promoting the Pistons, Kouyan water from the water pipe outflow. 2. Materials and the preparation of materials for production are: Robust a bottle, a Xiaosai, waste plastic pen two small steel ball (or a small glass beads) 2 and 1 m rigid hose, small steel Needle (or small nail) 2, glue, etc. 502. 1. Production of a one-way valve. Spin out of the pen T conical beak, in the mouth, T Add small ball, the ball can not be requested from the T Zuijian leakage, and then use a small heated to high temperature Steel Qitou pen mouth fixed in a small steel ball above, as its blocking rod. In order to prevent leakage, in the Steel through the mouth of the T painted some 502 external glue, as shown in Figure 2. Steel due to the length, preferably through, the two are not exposed. According to this method produced two good one-way valve. 2. Inlet and outlet pipe production. First outlet pipe production in the pen of a lead wire inserted in the T of alcohol put on the heating lamps, heated to continually rotate wait after softening from the middle Wancheng the shape shown in Figure 3, after the bend good lead wire out, and then a one-way valve shown in Figure 4 by the position of the mouth to stick T on. In this way, an outlet pipe on the well. Inlet production also very simple, Xiaosai drilling in the equivalent of an aperture diameter of the hole pen, the one-way valve as shown in Figure 5 on the position of the orifice to stick. 3. Completion of the various components produced in Robust bottle on the opening two holes, and the aperture diameter of the same pen, a bottle in the middle, and the other the bottom of the bottle. The outlet pipe inserted in the central part of the hole in the bottle to another pen tube inserted in the root hole in the bottle as the exhaust pipe, and then use the glue Nianlou 502. All must pay attention to the adhesive sealing, and no leakage phenomenon. 4. Sean the plastic inlet to the mouth of the bottle, with a hard hose in the bottom of the visco-connected to the exhaust pipe on the syringe. Robust a piston pump bottle on the model well. If you need the water to far more places in the outlet pipe can be Jacketed a hose, water pumping, the inlet mouth Add water, and constantly tic syringes, the water can be sent from the lower height
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