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Use parafilm to secure the tip of the buret.
要用石腊膜保护滴定管的塑胶头。
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The plastic tip helps in the formation of small droplets of solution to drop from the buret.
塑胶头会帮助滴定管滴出细小液滴。
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The plastic tip helps in the formation of small droplets of solution to drop from the buret.
塑胶头会帮助滴定管滴出细小液滴。
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