In the U. S., reactors shut down for refueling typically retain most of their fuel in the thick steel reactor pressure vessel that provides much more protection against a radioactive release.

在美国，如果反应堆因补充燃料而关闭，一般来说，在厚重的钢质反应堆压力容器内仍会存有大多数燃料，因为这个容器可提供更多保护，防止辐射泄漏。

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The welding wire is used for welding low carbon structural steel and low alloy steel. Such as ships, Bridges heavy-duty machines, boilers and pressure vessel etc.

该焊丝用于焊接低碳钢和低合金钢结构，如船舶、车辆、桥梁、工程机械、锅炉和压力容器等。

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The test shows that the non-equality and unknown stress distribution of weld joint, which can be promoted by extra-load, is the key to make sure the steel pressure vessel for safety.

结果表明，焊接接头的应力不均匀性和不确定性是影响钢制压力容器安全性的关键，采用加载法可以有效地改善这种非均匀应力分布状况。

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