It is common knowledge now that the way to make rubber hard and strong -- to "vulcanize" it, as we say -- is by heating it with sulphur.
要使橡胶硬而结实的方法——也就是我们所说的“化”——就是要掺入磺加热,这一点现在已经是常识了。
It is common knowledge now that the way to make rubber hard and strong -- to "vulcanize" it, as we say -- is by heating it with sulphur.
要使橡胶硬而结实的方法——也就是我们所说的“化”——就是要掺入磺加热,这一点现在已经是常识了。
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