To add a fluorine compound to(a drinking water supply,for example)for the purpose of reducing tooth decay .

加氟化物于…为减少牙齿受到侵蚀而加氟化物于(例如,饮用水中)

属类：综合句库--

neutrinos from a subsidiary decay process are the ones to be detected

将探测到来自次要衰变过程的微中子。

属类：综合句库--

She will decay in her sheath, as a narcissus will, if you do not give her air enough

她象一棵水仙花,如果你不给她足够的空气,她会在自己的紧身衣中腐烂。

属类：综合句库--

The insidious growth of decay

溃烂在不知不觉间的蔓延

属类：综合句库--

All its isotopes are radioactive. Radium does not occur free in nature but occurs in natural ores such as pitchblende as a disintegration product of radioactive decay of heavier elements, including uranium. Chemically it is highly reactive and has valence 2 in all of its compounds.

镭的所有同位素都是放射性的。在自然界镭不存在游离状态,但存在于天然矿石中,如沥青铀矿,是更重元素(包括铀)放射性衰变的产物。

属类：化学及生命科学-化学-

History sometimes seems to teach us that all nations decay in the course of time.

历史有时似乎在教导我们,所有的国家最后都会衰败。

属类：综合句库--

History sometimes seems to teach us that all nations decay in the course of time.

历史在昭示我们,任何国家都会逐渐衰落。、

属类：综合句库--

The "normal" thing is for a particle to undergo decay and transmute itself into other lighter particles

粒子发生衰变,本身蜕变为其它较轻的粒子,这是“正常”的事。

属类：综合句库--

Leaves which fall to the ground decay and become part of the soil.

落到地上的叶子腐烂之后成了土壤的一部分。

属类：综合句库--

Houses of decay , mine, his and all

没落之家,我的,他的,大家的。

属类：综合句库--

Its decay probability per second is the inverse of this time

每秒的衰变几率是这个时间的倒数。

属类：综合句库--

The Democrats were going to showcase all the wretchedness and decay and insolvency as a symbol of Republican not-so-benign neglect(Chicago Tribune.

民主党人准备将所有的卑鄙、腐败与无能加以曝光,并作为不能宽容共和党人的标志(《芝加哥论坛》)。

属类：综合句库--

Something,especially foodstuff,subject to decay or spoilage.Often used in the plural.

某些东西,尤指食物是易腐败的。常用做复数

属类：综合句库--

Method for laboratory test of natural decay resistance of woods

木材天然耐久性试验方法木材天然耐腐性实验室试验方法

属类：行业标准名称-国家标准名-GB/T13942.1-1992

The house fell into decay .

那房子腐朽了。

属类：综合句库--

The decay of the food was detected by the sense of smell.

凭嗅觉发现这食物变质了。

属类：综合句库--

However, some of the minerals contain xenon isotopes unlike those usually produced by radioactive decay of uranium

然而,有些含氙同位素的矿物并非如此,是由铀的放射性衰变产生的。

属类：综合句库--

Let us very briefly rehearse one or two facts about nuclear beta decay

让我们非常简要地复述一下有关该β衰变的一两件事实。

属类：综合句库--

Our intellectual power will decay in old age.

人的智力在年老时会衰退。

属类：综合句库--

It was feared that without some forms of americanization immigrants would cause a rapid decay of American institutions

人们担心,没有某种形式的美国化,移民将会导致美国制度的迅速解体。

属类：综合句库--

As people grow old, they will decay mentally as well as physically.

人们年老时脑力和体力都会衰退。

属类：综合句库--

Couched in mathematical language within the framework of the quantum theory, it gave a satisfying explanation of beta decay

如按量子理论的观点表达为数学语言,就可对β衰变作出满意的解释。

属类：综合句库--

If you do not clean your teeth they will decay .

如果你不刷牙,牙就会坏的。

属类：综合句库--

Social institutions--like atoms and stars--decay if energy is not added to keep them ordered, Friendships and families and economies all fall apart unless we constantly make an effort to keep them working and well oiled

社会机构--象原子和众星一样--如果不增加能量使其保持秩序,就会衰退。友谊、家庭及经济也都会崩溃,除非我们不断地努力使它们运转正常、润滑良好。

属类：综合句库--

Any of several radioactive gases that are isotopes of radon and are products of radioactive decay

射气几种氡的同位素的放射性气体,是放射性物质衰变的产物

属类：综合句库--

Growth and decay are vital processes.

生长和衰亡是生命过程。

属类：综合句库--

Oil is formed by the decay of animal, and possibly some plant, remains in a reducing environment in sedimentary deposits

石油是在沉积物还原环境中由动物遗骸,可能还有一些植物遗骸的分解所形成的。

属类：综合句库--

The food was beginning to decay .

食物开始腐烂了。

属类：综合句库--

To infect with corruption or decay .

使腐败传染腐化或腐朽

属类：综合句库--

To bring or fall into a state of partial ruin,decay ,or disrepair.

使损毁(使)或部分毁坏、坍塌或朽坏

属类：综合句库--