In algebra, the sign X usually denotes an unknown quantity.

在代数里, 符号X常用来表示未知数。

Our new director is still an unknown quantity.

新来主管知之甚少。

His work is good in respects of quality but bad in respect of quantity.

他工作质很好, 但数很少。

This medicine is poisonous if taken in large quantities.

这种药若服用过是有害。

It's wrong to sacrifice quality to quantity.

牺牲质去追求数是错误。

Quantities of food were spread out on the table.

许多食品被摊放在桌子上。

Quantities of food were on the table.

桌上摆了大食物。

A large quantity of beer was sold.

售出了大啤酒。

He ate a small quantity of rice.

他吃了少米饭。

Mathematics is the science of pure quantity.

数学是纯粹研究数科学。

She was burdened with a large quantity of parcels.

她吃力地捧着一大堆包裹。

Forensic examination revealed a large quantity of poison in the dead man’s stomach.

法医检验发现死者胃里有大毒药。

Large quantities of water are needed for cooling purpose.

冷却要用大水。

What i the actual quantity tated?

实际数说明什么？

Dimethoxymethane possesses higher quantity of oxygen, higher ratio of hydrogen to carbon and lower flash point.

甲缩醛含氧大、氢碳比高、闪点低，加入柴油中能够提高其十六烷值。

You must eliminate an unknown quantity.

你必须消去一个未知数。

A great quantity of soluble inorganic salt can force the surrounding soil seriously become salinization and alkalinization.

大可溶性无机盐会加剧周边土壤盐碱化。

Energy has amphimorphic porperties:conservative property of quantity and no conservative property of quality.

能具有守恒性和能质不守恒性,即同时遵循热力学第一定律、热力学第二定律。

A new chelatometry has been applied to measure molybdenum quantities of molybdenum disulfide lubricant,replacing the traditional weight method.

提出了新螯合滴定法测定二硫化钼,用以取代传统重法。

Rare earth can influence for shape size,distribution and quantity of niobium carbonide,decrease activity of carbon and niobium i...

稀土碳化铌形态、大小、分布、数有影响,可降低碳、铌活度,阻碍碳化铌在奥氏体区析出。