The microstructure and microhardness of ths laser nulted Fe - Sb alloys were studied.是什么意思？

The microstructure and microhardness of ths laser nulted Fe - Sb alloys were studied.

研究了激光表面熔化Fe-Sb合金的显微组织和显微硬度.

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。

microstructure

n. 微观结构，显微结构，显微构造；

例句
The weld metal showed very good toughness at low temperature, and dominant microstructure of acicular ferrite.
结果表明:所研制焊丝的焊缝金属具有优良的低温韧性, 且实现了以得到针状铁素体组织为主的设计目标.

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。

microhardness

n. 微硬度，显微硬度；

例句
The depth and microhardness distribution of alumetizing layer obtained on different technical conditions were measured.
测定了不同工艺条件下获得的浸渗层深度和浸渗层显微硬度的分布.

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。

laser

n. 激光，激光器，镭射器；

例句
...high-energy laser beams.
高能激光束

Fe

abbr. for example 例如，feather-edged 圆角棱的，female employee 女性雇员，fighter escort 战斗机护航；

例句
Wet ashing and flame atomic absorption determination of Ca, Mg and Fe have been studied.
本文研究了湿法灰化火焰原子吸收法测定多种加工食品中的钙 、 镁和铁.

alloys

n. 合金( alloy的名词复数 )；

例句
Initially these alloys were austenitic.
最初,这些合金为奥氏体合金.

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。