The micro - gabbro phase is indentical with the typical Bulawayan dolerite sills.是什么意思？

The micro - gabbro phase is indentical with the typical Bulawayan dolerite sills.

微辉长岩相与标准的布拉瓦约粒玄岩床相同.

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。

micro

n. <口>微型计算机，微处理器；adj. 极小的；

例句
You haven't lived until you've used their new micro system.
要是没用过他们新的微系统，这辈子就算白活了。

gabbro

n. 辉长岩；

例句
The micro - gabbro phase is indentical with the typical Bulawayan dolerite sills.
微辉长岩相与标准的布拉瓦约粒玄岩床相同.

phase

n. 阶段，时期，月相，（月亮的）盈亏；v. 分阶段实行，逐步做，使定相；

例句
McCarthy was asked to analyse the data from the first phase of trials of the vaccine...
麦卡锡被要求对第一阶段疫苗试验的数据作出分析。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

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。

dolerite

n. 粗粒玄武岩，辉绿岩，粗玄岩；

例句
At Scinto 6 uranium occurs in much altered dolerite below the unconformity.
“辛托6”的铀矿体产于不整合面之下变质甚深的粒玄岩中.

sills

n. 窗台（板）( sill的名词复数 )，门槛，侵入火成岩席，平巷底；

例句
Eventually he was happy that the sills and doors were a reasonably good fit.
门槛和门扇算是贴合良好，他终于开心了。