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1.The new electroheat installation has greatly improved the efficiency of our factory.
新型的电热安装大大提高了我们工厂的效率。
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2. The engineers carefully installed the electroheat installation according to the instructions.
工程师们根据说明仔细安装了电热安装。
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3. The installation of the electroheat system is a complex process that requires careful planning and execution.
电热系统的安装是一个复杂的过程，需要仔细规划和执行。