Argument functions are defined by set and its existence , Continuity and differentiability are discussed.是什么意思？

Argument functions are defined by set and its existence , Continuity and differentiability are discussed.

利用集合来定义辐角函数,研究幅角函数的存在性、连续性、可微性等性质.

argument

n. 争论，争吵，论据，[数]幅角，主题，情节；

例句
That argument apart, it is for the Germans themselves to work out how their forces should come together.
撇开那场纷争不谈，德国人自己也应该考虑一下如何将各种力量拧成一股绳。

functions

n. 功能( function的名词复数 )，依赖别事物的事物，函数，官能；

例句
Attempts to correlate specific language functions with particular parts of the brain have not advanced very far...
人们试图把特定的语言功能与大脑的某些特定部位联系起来，这一努力目前还没有取得很大进展。

are

vi. （用于第二人称单复数现在时，第一、三人称复数现在时）是；n. 公亩（等于100平方米）；

例句
We are scared to abandon ourselves to our feelings in case we seem weak or out of control.
我们不敢放纵自己的情感，以免显得太过软弱或缺乏自制。

defined

adj. 有定义的，明确的，清晰的，轮廓分明的；v. 给…下定义，解释，限定(define的过去式和过去分词)；

例句
Caste is defined primarily by social honour attained through personal lifestyle...
社会等级制度主要是通过个人生活方式赢得的社会荣誉来确定。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

set

vt. 放置，安置，使处于某种状况，设置，摆放餐具；vi. 落山，出发，凝结；n. 一套，一副，集合，布景，电视机；adj. 固定的，位于…的，顽固的，安排好的；

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

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。

its

pron. (it的所有格形式)它的，厥；

例句
The government is to accelerate its privatisation programme.
政府将加快其私有化计划的进程。

existence

n. 存在，实在，生活，生活方式，实体，存在物；

例句
...this theological conundrum of the existence of evil and suffering in a world created by a good God.
在善良的上帝创造的世界里存在着邪恶和苦难这一神学之谜

continuity

n. 连续性，继续，分镜头电影剧本，串联，衔接，[影视]剪辑；

例句
...a tank designed to ensure continuity of fuel supply during aerobatics.
为保证特技飞行过程中燃油的持续供应而专门设计的油箱

differentiability

n. 可辨性，可微性；

例句
The example that ultimately drove home the distinction between continuity and differentiability was given by him.
最终讲明白连续性和可微性之间的区别的例子是由他给出的.

discussed

v. 谈论( discuss的过去式和过去分词 )，讨论，商量，论述；

例句
We were very adult about it. We discussed it rationally over a drink.
在这件事上我们表现得很成熟。我们一边喝酒一边心平气和地谈了谈。