对焊透的对接焊缝,当满足下列条件之一者,强度已满足,无需进行强度验算: ①焊缝质量得以保证(即一、二级焊缝); ②焊缝有效截面不低于焊件有效截面(即采用引弧板)。
— Is it better to be physically attractive or intelligent?
— .
Sometimes buyers only purchase some , tangible or intangible.
You can have eggs or hard-boiled.
Goods are carried by several of transport--on road or rail, by sea or air.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
Prices may change quickly if supply or demand .
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