The isothermal and non isothermal crystallizing behaviors of PETG were studied.是什么意思？

The isothermal and non isothermal crystallizing behaviors of PETG were studied.

研究了PETG(醇改性聚酯)的等温和非等温结晶性能.

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。

isothermal

adj. 等温的，等温线的；n. 等温线；

例句
The coking and deactivation of virgin naphtha aromatization catalyst are studied on isothermal reactor.
利用等温固定床反应器研究了直馏汽油芳构化改质催化剂的结焦失活规律.

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。

Non

adv. 非，不；n. [法]反对票，投反对票的人；

例句
Above its doors was a Latin inscription: Non omnia possumus omnes...
门的上方刻有拉丁文铭“人非万能”。

crystallizing

v. 使结晶( crystallize的现在分词 )，计划成型，具体化；

例句
The purpose of ( a ) is to facilitate fiberization and of ( b ) to reduce crystallizing tendency.
办法 ( a ) 的目的是改善纤维形成,办法 ( b ) 的目的是减少折晶倾向.

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。

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。

studied

adj. 有计划的，故意的，深思熟虑的，精通的；v. 学习，研究( study的过去式和过去分词 )，想出，详细地检查，背诵（台词等）；

例句
At college he studied English and did amateur boxing.
大学时，他学习英语，同时还参加业余拳击。