DVD
, O: z' Y, C/ T* R1 S　　Short for digital versatile disc or digital video disc, a type of optical disk technology similar to the CD-ROM. A DVD holds a minimum of 4.7GB of data, enough for a full-length movie. The DVD specification supports disks with capacities of from 4.7GB to 17GB and access rates of 600KBps to 1.3 MBps. One of the best features of DVD drives is that they are backward-compatible with CD-ROMs, meaning they can play old CD-ROMs, CD-I disks, and video CDs, as well as new DVD-ROMs. Newer DVD players can also read CD-R disks. DVD uses MPEG-2 to compress video data.   I1 |5 K' c& I' B; P+ U& U- g
DVD
" d) |% }' d& i# w) ^　　DVD系数字通用盘或数字视频盘的英文缩写，是一类与CD-ROM相似的光盘技术。一张DVD盘能保存最少4.7GB的数据，足于记录整部电影。DVD规范支持从4.7GB到17GB不同存储容量的盘和600Kbps到1.3Mbps不同存取速度。DVD驱动器最佳的特点之一就是与CD-ROM后向兼容，意味着它能支持CE-ROM、CD-I和VCD，以及DVD-ROM。更新的DVD播放机还能读CD-R盘。DVD采用MPEG-2标准压缩视频数据。
+ C# n) }( c6 d+ D$ SDVD-R 8 a% E7 k/ U, f% m, z" k
　　Short for Short for DVD-Recordable. A DVD-R can only record data once and then the data becomes permanent on the disc. There also are two additional standards for DVD-R disks: DVD-RG for general use, and DVD-RA for authoring, which is used for mastering DVD video or data and is not typically available to the general public. DVD-R, DVD-RW and DVD-RAM are supported by Panasonic, Toshiba, Apple Computer, Hitachi, NEC, Pioneer, Samsung and Sharp. These formats are also supported by the DVD Forum.
4 N$ y# A. W) A5 `, {, \9 XDVD-R
- l+ |1 s' n- N　　DVD-R系“DVD-可记录”的英文缩写。DVD-R只能一次性记录数据，然后数据就永久性记录在盘上。DVD-R另外还有两种附加的标准：通用DVD-RG和创作DVD-RA，后者用于制作DVD视频和数据的母盘，通常不提供给普通大众。松下、东芝、苹果电脑、日立、NEC、先锋、三星和夏普支持DVD-R、DVD-RW 和DVD-RAM。这些格式也得到了DVD论坛的支持。 8 r6 W, C, G* D5 t' r
DVD+R % b2 C9 m1 D; A; G
　　Short for DVD+Recordable . A DVD+R can only record data once and then the data becomes permanent on the disc. DVD+R and DVD+RW formats are supported by Philips, Sony, Hewlett-Packard, Dell, Ricoh, Yamaha and others.
2 K9 J9 [% B: T. z# S) `3 ^DVD+R
7 ?1 t. w+ j: l2 ?* _　　DVD+R系“DVD+可记录”的英文缩写。DVD+R只能一次性记录数据，然后数据就永久性记录在盘上。DVD+R和DVD+RW格式得到飞利浦、索尼、惠普、戴尔、理光、雅马哈以及其他一些公司的支持。+ N0 {) H7 w+ U5 ~+ r& H
DVD-RW 4 C: U' ^  I* n4 h- V& c9 R
　　Short for DVD-ReWritable, a re-recordable DVD format similar to DVD+RW. The data on a DVD-RW disc can be erased and recorded over numerous times without damaging the medium. / ]4 x- |) S) G2 f
DVD-RW
/ T1 f6 `2 |& z  k　　DVD-RW系DVD-可重复写的英文缩写，是一种可反复纪录的DVD格式，与DVD+RW类似。DVD-RW盘上的数据可以擦掉并可多次纪录，对介质没有损伤。
! i2 L" J- H$ U3 A; K! D( R2 ?DVD-RAM
4 E1 z# K5 W2 c" z- i% _5 c( j　　A DVD format wherein DVD-RAM discs can be recorded and erased repeatedly but are only compatible with devices manufactured by the companies that support the DVD-RAM format. DVD-RAM discs are typically housed in cartridges.
0 _) S) ?% v) V( j" ^9 D2 B/ }4 \7 p9 ADVD-RAM 4 s4 M6 t+ Q/ t+ p3 S: X: c7 ?
　　DVD盘的一种格式，DVD-RAM盘能反复擦写，但它只与支持DVD-RAM格式的公司制造的设备相兼容。DVD-RAM盘一般装在盒套里。
2 i% Y$ N- U2 L' h" C$ q. tDVD-ROM
& U4 x6 I( Z( i+ R5 [7 C　　DVD-ROM was the first DVD standard to hit the market and is a read-only format. The video or game content is burned onto the DVD once and the DVD will run on any DVD-ROM-equipped device. , o- G6 i$ }  S7 F5 B
DVD-ROM ; Y) l1 u; w8 q$ B9 H2 R2 B" ~- }
　　DVD-ROM是第一个进入市场的DVD标准，它是一种只读式格式。视频或游戏内容一次性烧在DVD盘上，该盘能在配备了DVD-ROM的设备上运行。 & B1 _% }' G" ^' a
DVD+RW ) A! @" f, h. V( t
　　Short for DVD+ReWritable, a re-recordable DVD format similar to CD-RW. The data on a DVD+RW disc can be erased and recorded over numerous times without damaging the medium. 1 G) B; Z1 }. d8 o  s/ q6 T0 ]1 M
DVD+RW ) v- X8 X  ]4 _% Q! g3 O/ l6 B' G; v
　　DVD+RW系DVD+可重复写的英文缩写，是一种可反复纪录的DVD格式，与CD-RW类似。DVD+RW盘上的数据可以擦掉并可多次纪录，对介质没有损伤。 6 H# A% a$ w6 }6 m! K
DVD5 8 X9 S. b/ u+ {8 I1 U; [' Y
　　A single-sided, single layer DVD that can hold up to 4.7GB (120 minutes) of high quality audio and video data. All DVDs are made from two substrates that are bonded together, and the second substrate on a DVD5 is a data-less layer that does not contain any pits.
8 `! Q( t8 L4 W+ e5 A0 `DVD5 0 F) H( d" b( |8 J7 N. A
　　它是一个单面单层的 DVD，能保存4.7GB（120分钟）高质量音频和视频数据。所有的DVD盘是由两种衬底材料压在一起而成，DVD5上的第二层衬底是没有数据的，上面没有任何凹点。
8 O5 ~$ v6 g# U2 [0 X8 n* u% KDVD9
! K( {% v4 N$ ?　　A single-sided, dual-layer DVD that can hold 8.54GB (or fours hours) of audio and video data. It should be noted that DVD-RW and DVD+RW do not support DVD9. 6 P% n$ R' |& i+ \
DVD9 8 Q$ a0 i6 s" |  B, o7 V$ _9 L  o9 U
　　它是单面双层的 DVD，能保存54GB（4小时）的音频和视频数据。请注意，DVD-RW和DVD+RW不支持DVD9。

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