substance 四级六级考研GMATGRE

The dark matter in the universe remains a mysterious substance.

宇宙中暗仍然是一种神秘。

Is there any substance to their claim?

他们要求有实内容吗?

Many highly corrosive substances are used in the nuclear industry.

核业使用许多腐蚀性很强。

These materials, dubbed cuprates, typically consist of copper oxide layers sandwiched between other substances.

这些称为铜氧化（cuprate）材料，基本上是由其他夹著一层氧化铜。

But some bitter substances in it such as elaterin are unacceptable.

由于苦瓜含有苦瓜素等,苦味较重,令一些消费者难以接受。

Objective To investigate more effective substances or their combination for depleted uranium (DU) decorporation.

目比较常见几种贫铀促排剂,寻找高效低毒药或组合方案。

Even innocuous substances can sometimes register a positive result in a drug test.

即使无害在药测试中有时也会呈阳性。

She injected them with phytohaemagglutinin (PHA), a substance that induces an immune reaction.

她为它们注射了植血球凝集素（PHA），这种能够引起免疫反映。

Mingle these two substances before the experiment.

实验之前先将这两种混合起来。

Substances consist of small particles called molecules.

是由叫做分子微粒组成。

A catalyst is a substance which speeds up a chemical reaction.

催化剂是一种能加速化学反应。

Keto-enol tautomerism is the most common tautomery phenomenon.Keto -enol themselves are the real chemical substance.

酮及烯醇互变是互变用最普通现象,它们都是真实化学实体。

Oxygen is one of the basic elements of substance.

氧是基本元素之一。

The terrorists charged the bomb with an explosive substance.

那些恐怖主义者给炸弹上装了炸药。

Fertilizer is a substance put on land to fertilize it.

肥料是施在地里使之肥沃。

The fatty substances have been rendered down.

脂肪已提炼出来了。

HPLC method for determination of amrinone and its related substances was established.

建立了HPLC法测定氨力农及有关含量。

Aim To optimize and establish the extraction technology of antidepressive substances from Hypericum perforatum L.

目优选并确立贯叶连翘中抗抑郁成分最佳提取艺。

This mixture is resolvable into two simple substances.

这混合可分解成两种简单。

The substance is good, but the style repellent.

内容甚佳，但文体甚糟。