名词中文翻译
中文翻译：已知数量
同义词：
['known quantity', 'known amount', 'known quantity of']
例句：
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1. The company's sales have increased significantly since the introduction of new products.
自从引入新产品以来，公司的销售额显著增加。
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2. The government has a known quantity of resources to support its citizens.
政府拥有一定量的资源来支持其公民。
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3.The research team has identified several known quantities of rare earth elements in the sample.
研究团队已经确定了样本中几种稀有元素的含量。