The sealing property of rubber sealing X - ring is superior to that of O - ring as applying, but the process of sealing X - ring is difficult.

在应用橡胶圈的密封技术中，X形橡胶密封圈比O形橡胶密封圈具有更优越的密封特性。

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One slot can be configured as a PCI-X slot to work with PCI-X expansion cards, allowing you to preserve your investment in expensive or custom I/O cards and devices.

其中一个插槽可以作为PCI-X插槽，用来安装PCI-X扩展卡，可为您省去购买昂贵的或者自自定义输入输出卡等设备的费用。

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And this structure that I've depicted here using the X's and O's is called the Lewis structure.

我在这儿描述的结构,用X和O表示电子的方式叫做Lewis电子式。

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"We have two witnesses and evidence against him, " he said, drawing X's, O's and spiral doodles on a blank sheet of paper as he listened.

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With real playbooks featured in Madden and constant input by John Madden himself, the 'x's and o's' of football are being taught to the next generation of gridiron greats.

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