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The main useful mineral is celestine.是什么意思？

The main useful mineral is celestine.

矿石组构虽然复杂,但其矿物组成比较简单,有用矿物主要为天青石.

相关词汇
the main useful mineral is celestine

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。

main

adj. 主要的，最重要的，全力的；n. 最主要的部分，重点，主要管道，体力，[航海]公海；
例句
The school occupies split-site accommodation on the main campus...
该学院分散在主校区不同地点。

useful

adj. 有用的，有益的，有帮助的，令人满意的；
例句
A tripod will be useful to align and steady the camera...
三脚架有助于调准和稳定相机。

mineral

n. 矿物，矿石，矿物质，汽水；adj. 矿物的，似矿物的；
例句
...an effervescent mineral water.
含汽矿泉水

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。

celestine

天青石；
例句
This paper shows the test results of certain celestine ore.
论述了某天青石矿浮选试验研究结果.
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He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
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Difficulties arise in attempting to understand the mechanisms of antiarrhythmic drug action for several reasons.
在企图了解抗心律失常药物作用的机制中产生某些困难是有一些原因的.
...Western Europe's biggest onshore oilfield.
西欧最大的陆上油田
...the Saturday morning cartoons.
星期六上午的动画片
Every fool can find faults that wise man cannot remedy.
蠢人也能找出聪明人无法弥补的岔子来的。
Ducking her head against the rain, she hastened on.
她冲着雨埋头继续赶路.
Please speak quietly.I think somebody is listening in.
请小声点, 我想有人在窃听。
It now seems only a matter of time before they resign...
现在看来，他们辞职是早晚的事。
'The human sound - track'he nicknamed her in his own mind.
在心里他给她个绰号,就叫"人体录音带 ".
A cyanide free silver electroplating process with 5, 5 - dimethyl hydantoin as coordination agent is studied.
研究了5, 5- 二甲基乙内酰脲为配位剂的无氰镀银工艺.
Some favoured dahlia, others preferred the bright geranium.
一些人偏爱天竺牡丹; 另一些人则比较喜欢鲜艳的天竺葵.