1. (computer science) electronic equipment connected by cable to the CPU of a computer;

   "disk drives and printers are important peripherals"
   

1. on or near an edge or constituting an outer boundary; the outer area;

   "Russia's peripheral provinces"
   "peripheral suburbs"
   

2. related to the key issue but not of central importance;

   "a peripheral interest"
   "energy is far from a peripheral issue in the economy"
   "peripheral issues"
   

1.无关紧要的；次要的
Aperipheral activity or issue is one which is not very important compared with other activities or issues.

e.g. Companies are increasingly keen to contract outperipheral activities like training...
公司越来越倾向于把像培训这样的非核心业务外包出去。
e.g. ...peripheral and boring information...
无关紧要的无聊信息

2.周围的；边缘的
peripheral areas of land are ones which are on the edge of a larger area.

e.g. ...peripheral regions beyond the reach of powerful rulers.
强大的统治者势力范围之外的边缘地区
e.g. ...urban development in the outerperipheral areas of large towns.
大城市外围地区的城市开发

3.（计算机）外围设备，外部设备
peripherals are devices that can be attached to computers.

e.g. ...peripherals to expand the use of our computers.
扩展计算机用途的外围设备
e.g. ...peripheral products for the basic computer.
普通电脑的外围设备

1. peripheral的解释

1. 外围设备：外围设备 外围设备(peripheral)计算机所连接的如打印机、扫描仪等计算机附件. 平台 平台(platform)即运行软件的计算机. 一个平台可以包含一种操作系统,也可以不包含操作系统. 程序(program) 设计用来执行某种特殊任务的一种有组织的计算机代码集,

2. 外设：此时网络访问能力从核心主机服务器系统中分化出来并逐渐扮演重要角色. 此时信息存储系统仍然是主机服务器的外设(peripheral) ,广大用户普遍认同以计算机服务器(Server)为核心规划信息系统,视直连存储为外设(peripheral).

3. peripheral是什么意思

3. 周围性：临床上分成中心性(central)、周围性(peripheral)、间叶性(mesenchymalru)、分化型 (differentiated) 及透明细胞(clear cell)5种亚型. 少数的软骨肉瘤位於骨骼外. 软骨肉瘤又分原发性和次发性两种. 原发者来自骨内或肌腱附著处残存的软骨细胞.