はてなキーワード: s surfaceとは
The sales of compact disc albums have seen a significant decline since that record week in 2000. Nielsen Sound Scan reported that over 730 million units sold in 2000. In 2010, album sales hit an all-time low of 326 million units sold, including digitally downloaded albums.
"Nobody wants to go through the trouble of going to a music store, finding and buying a CD, opening the package, etc. Now we just click a button on the Internet and instantly have music," said Keegan Gogerty, 22, a singer/songwriter and radio-TV-film student.
Pirating music has been on the rise since Napster launched its peer-to-peer file-sharing software in 1999. Napster was known for allowing users to share and trade their MP3 files with one another over the Internet for free.
"I don't blame people for not wanting to purchase music. If I want to support a band, I will attend their concerts or buy a T-shirt. That is where they receive the most royalties anyway," said Charlie Hatano, an advertising graduate student.
"Nothing beats getting a new CD, reading the booklet and reading the lyrics," said Sutton. "I agree Internet downloading is more convenient, but I find owning a physical CD collection rewarding, rather than clogging up my computer with music I download."
"I'll admit that I have had friends burn an album for me or copy them into my computer for my iPod," Sutton said. Making copies of CDs, illegally downloading the album and sharing, it is all the same.
|A||-||cross sectional area||断面積|
|C||-||celerity or phase velocity of waves||波の速さか位相速度|
|C_s||-||concentration on the seagrass surface||海中植物の 表面への集中|
|C_w||-||concentration in the water column||水柱における集中|
|DBL||-||diffusive boundary layer||拡散境界層|
|δ||-||diffusive boundary layer thickness||〃 の厚さ|
|δ_D||-||diffusive boundary layer (==DBL)|
|δ_l||-||inertial sublayer or logarithmic (log) layer||内部境界層かログ層|
|F_d||-||friction or viscous drag||摩擦か粘性抵抗|
|F_p||-||form or pressure drag||圧力抗力か形状抵抗|
|g||-||acceleration due to gravity||重力加速度|
|κ||-||von Karman constant||カルマン定数|
|μ||-||molecular or dynamic viscosity||動粘性係数か分子粘性|
|p||-||hydrostatic or dynamic pressure||静水圧か動圧|
|Q||-||volume flow rate||体積流量率|
|REI||-||relative wave exposure index||相対波露出度|
|Re_crit||-||critical Reynolds number||臨界レイノルズ数|
|τ_o||-||boundary shear stress||境界剪断応力|
|τ_w||-||wall shear stress||壁剪断応力|
|U_o||-||free stream velocity||自由流速度|
|χ||-||principal flow direction||主要流向|
|z||-||vertical direction or depth||縦方向か水深|