A clear, cylindrical glass tube usually open at one end and rounded at the other, used in laboratory experimentation.
透明的，圆柱形玻璃管，通常一端开口另一端为圆形，用于实验室实验。
A clear, cylindrical glass tube usually open at one end and rounded at the other, used in laboratory experimentation.
透明的，圆柱形玻璃管，通常一端开口另一端为圆形，用于实验室实验。
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