In view of the actual condition, this paper paid more attention to the cylinder acoustical holography algorithm in half-free space that is more applied.

针对于实际工况，重点研究了半自由空间中柱面声全息的算法，使声全息理论更加贴合实际。

youdao

Through blood drawn by lash and blood drawn by sword, we learned that no union founded on the principles of liberty and equality could survive half-slave and half-free.

从鞭笞和刀剑溅起的血光中，我们领悟到，基于自由与平等原则所成立的联邦，不可能在半自由半奴役的状态下存活。

youdao

Buy any full price movie ticket on weekdays, you can buy a second ticket for a friend for only half price, or a second ticket for free on your birthday!

工作日购买任意全价电影票，只需半价即可为朋友购买第二张电影票，生日当天也可免费购买第二张电影票！

youdao

The American Lung Association says half of the fifty states have passed smoke-free laws.

VOA: special.2009.05.27

How had the country existed half-slave and half-free for so many years, Lincoln asked.

VOA: special.2009.06.11

He noted that the country had been half-slave and half-free for seventy years.

VOA: special.2009.06.11

Ronaldinho won the World Cup in 2002 and famously knocked out England at that tournament after lobbing keeper David Seaman with a second-half free-kick.

BBC: Brazil star Ronaldinho doubtful for World Cup squad

Both sides failed to make the most of their first-half free-kicks and corners and were guilty of poor passing from set pieces as well as when going forward.

BBC: Atletico Madrid 1-0 Liverpool

Japan scored two stunning first-half free-kicks to secure a well-deserved win over Denmark and set up a meeting with Paraguay in the last 16 of the World Cup.

BBC: Denmark 1-3 Japan