The welted joint, executed in this way, is a rapid means of jointing and effectively allows for expansion and contraction of the metal covering.

这种新方法需要一种专门的高效率的机械装置。对接坡口焊是一种连接迅速的施焊工艺，它可以有效地保证金属盖板的胀缩。

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The two nations agreed to 20 trade deals covering new energy, agriculture, cotton and non-ferrous metal imports.

两国签署了20个商贸协议，涉及新能源、农业、棉纱进口和有色金属进口多个领域。

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The discs are made of flexible Nitinol metal and covered in polyester fabric that encourages heart tissue to grow over the discs completely covering them during healing.

这些圆片被能变形的镍钛记忆合金制成，其上覆盖聚酯纤维，这能促进心脏组织在愈合期间沿圆片生长并完全覆盖它们。

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Authorities' search of the jail cell showed that the two suspects apparently used a hacksaw to cut through metal bars covering a 1-by-3.5-foot window and then broke the glass to gain access to an outside courtyard, authorities said.

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Gold also benefitted from short covering from weak-handed sellers of the metal just recently.

FORBES: P.M. Kitco Metals Roundup: Gold Ends Up on Fresh Safe-Haven Demand, Short Covering

In his 50-year career, Ovshinsky received more than 400 patents in the U.S. and more than 800 foreign patents covering a range of technologies, including nickel-metal hydride batteries, rewritable CDs, DVD optical discs, flat-screen liquid crystal displays, hydrogen fuel cells, thin-film solar cells and others.

FORBES: Stanford Ovshinsky, Battery Genius Behind Smartphones And Hybrids, Dies At 89