... 泡沫塑料改土剂 plastiponics 硼钙比 boron-calcium ratio 膨润土 bentonite ...
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所以说这是与硼硅玻璃，具有相当高的电阻率比一般的钠钙玻璃。
So it was with borosilicate glass, which had a considerably higher specific resistance than typical soda-lime glass.
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