A 10MHz, 0.5in. dia. , searchunit is placed on steel and acrylic plastic in succession. The beam spread in these two materials is approximately.
直径0.5吋的直探头放在钢板上,钢板后紧贴有丙烯树脂塑料。声束在两种材料中的扩散角约为( )。
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The company's online-searchunit, Sogou Inc., is likely to break even in the next two to four quarters, said Sohu.com's chief operating officer, Belinda Wang.