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1.The engineer designed a step seal to prevent water leakage during construction.
工程师设计了一个台阶密封来防止施工期间的水渗漏。
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2.The new step seal has significantly improved the sealing performance of the door.
新的台阶密封显著提高了门的密封性能。
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3.The company introduced a new step seal technology to enhance the durability and reliability of its products.
该公司推出了一种新的台阶密封技术，以提高其产品的使用寿命和可靠性。