测量方法：为使测点的位置准确，在测量前应根据磁极形状制作测点样板(用有机玻璃板或木板)。
Measuring method: in order to make the point location accurate, in measurement shall, before making point polarity shape according to the sample (with organic glass or planks).
用有机玻璃板和橡皮膜制成了双联压强计，不仅可以直观的演示液体中的内部压强，还可以演示浮力的有关实验。
The double piezometer is made of organic glasses and rubber membranes. It can not only directly shows the interior pressure in liquid, but also can be used in the buoyancy force related experiments.
用有机玻璃板和橡皮膜制成了双联压强计，不仅可以直观的演示液体中的内部压强，还可以演示浮力的有关实验。
The double piezometer is made of organic glasses and rubber membranes. It can not only directly shows the interior pressure in liquid, but also can be used in the buoyancy force related experiments.
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