Electronic commerce teaching sand table model
An e-commerce, sand table technology, applied in teaching models, educational appliances, instruments, etc., can solve the problems of inconvenient use, excessive result error, and increase in use cost, and achieve convenient use, improve work accuracy, and reduce use costs. Effect
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[0022] Embodiment: the teaching staff opens the threaded cover 5 on the top of the sandbox 6 to add sand to the sandbox 6. After the sand inside the sandbox 6 is filled up, close the threaded cover 5 and start using the sandbox 2. During use , the teaching personnel use the metering glass tube 7 as the deduction enterprise, according to the teaching plan, hold the handle 1 on the top of the sand table box 2 to twitch the sand blocking slider 12, when the sand blocking slider 12 is pulled away, the sand inside the sand box 6 passes through the sand leakage The channel 15 falls into the metering glass tube 7. At this time, the teaching personnel observe the height of the sand inside the metering glass tube 7 through the scale line on the metering glass tube 7. When the height of the sand reaches the preset value, push the sand blocking slide bar 12 Block the sand leakage channel 15, and add sand to the remaining metering glass tubes 7 in turn. After the addition is completed, the...
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