A 10MHz, 0.5in. dia. , search unit 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-search unit, Sogou Inc., is likely to break even in the next two to four quarters, said Sohu.com's chief operating officer, Belinda Wang.

搜狐首席运营官王昕表示，该公司旗下的在线搜索部门——搜狗公司很可能在未来两至四个季度内实现盈亏平衡。

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Using hybrid GPS-aided navigation, the unit can support search and rescue (SAR) operations.

采用混合GPS辅助航行，该设备能够支持搜索和救援(SAR)操作。

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The Yorkshire and Humber Underwater Search and Marine Unit will operate from the Humberside Police area.

BBC: Yorkshire merged police underwater search unit launches

Figures released on Monday showed that the Royal Navy's search and rescue unit in Prestwick, Ayrshire, was the busiest in the UK last year.

BBC: 'Serious questions' over search and rescue contract

The department's Urban Search and Rescue unit who extricated the woman train for situations such as building collapses and none of the tactics used Wednesday were improvised, Simmons said.

NPR: Rescuers Free Woman Wedged Between 2 Buildings