The content and difference of 4 typical routing protocols of DSR, AODV, DSDV and OLSR were elaborated.是什么意思？

The content and difference of 4 typical routing protocols of DSR, AODV, DSDV and OLSR were elaborated.

阐述了DSR 、 AODV 、 DSDV、OLSR四种路由协议内容及区别.

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

content

n. 内容，（书等的）目录，满足，容量；

例句
It contains less than 1 per cent fat, an appreciable amount of protein, and a high content of minerals...
它所含脂肪不到1%，富含蛋白质，矿物质含量也很高。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

difference

n. 差别，差异，[数]差数，差额，意见分歧，特色；vt. 辨别，区分；

例句
Contrary to popular belief, there is no evidence that what you look like makes much difference to your life.
和人们一般的看法相反，没有证据表明面相对人生有多大影响。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

typical

adj. 典型的，特有的或特别的，代表性的；

例句
The typical laborer now sits in front of a bank of dials.
现如今，工人通常都是坐在一排仪表前。

routing

vt. 按某路线发送（route的现在分词形式）；

例句
Network stability occurs because a reduced routing - table size means reduced bandwidth use.
网络稳定性体现在由于减小了路由表的尺寸通常就减少带宽使用.

protocols

n. 礼仪( protocol的名词复数 )，（外交条约的）草案，（数据传递的）协议，科学实验报告（或计划）；

例句
There are also protocols on the testing of nuclear weapons.
也有关于核武器试验的协议。

dsr

abbr. disrated 降级的，data set ready 数据设备就绪，digit storage relay 数字存储器，depolymerized scrap rubber 解聚橡胶；

例句
Dynamic Source Routing protocol ( DSR ), which operates entirely on - demand has been an Internet - Draft of IETF.
DSR 协议作为一种简洁有效的按需机制路由协议, 成为IETF的MANET工作组提出的草案之一.

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

elaborated

v. 详尽说明( elaborate的过去式和过去分词 )，变得复杂，详细制定，详尽阐述；

例句
...the plan elaborated by the five permanent members of the UN Security Council.
由联合国安全理事会5个常任理事国详细制定的方案