求翻译：对催化剂进行预硫化可提高催化剂的催化活性和使用寿命，因此，预硫化技术已经成为加氢催化剂开发应用的关键步骤之一。 本文主要研究了加氢裂化催化剂的预硫化技术。结合国内预硫化设备的现状，以及器外硫化方法不断进步的情况下，使用器内预硫化技术面临严峻的考验。但本公司在现有的用于干法预硫化的设备上进行小部分的调整和改进之后，就可以直接用于湿法硫化。此次器内预硫化用时为42h，较之前的干法硫化80h有大幅度的降低，此过程验证了器内预硫化方法的优越性。 通过以上实验结果表明器内湿法预硫化方法可在加氢裂化装置内进行推广。是什么意思？

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