our basement has only flooded twice in 15 years. would it be wise--or a waste of money--to install a sump pump?

1、

when my sump pump flushes, it makes a loud banging sound. do i need a check valve or something else to make this stop?

我的抽水泵内的水流忽大忽小，发出砰砰砰的声音。我是不是要通过止逆阀等器件来让它停住？

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2、

if we had been home, i'd have powered up the generator, plugged in the sump pump, and been just fine.

如果我们当时在家，我肯定已经启动小发电机，插上水泵，那样一切都没事了。

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3、

what's the difference between a standard sump pump and a grinder pump? how do i decide which to install?

标准的抽水泵和研磨泵到底有何区别？我怎么判断该装哪种？

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4、

drilling in the manual mode selector switch automatically send electric drill through the hand wheel speed;

钻进方式选择开关在手动时自动送钻电机通过手轮调速；

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5、

my kitchen scales are not accurate.

我的厨房秤不精确.

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6、

reform discussion on electrical energy meter and tariff system for low voltage and un-large industrial user

低压非大工业用户电能表与电价制改革初探

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7、

application of dynamic density functional theory for the simulation of mesoscopic structure of block copolymer

动态密度泛函理论在嵌段共聚物介观结构模拟中的应用

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8、

persistent currents in mesoscopic structure with an impurity

含杂质的介观结构中的持续电流

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9、

measurement of splines with small module on universal tool maker's microscope

在万工显上测量小模数花键齿形

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10、

the external clock frequency applied to the ad7764 determines the sample rate, filter corner frequencies, and output word rate.

AD7764的采样速率、滤波器转折频率和输出字速率由外部时钟频率决定。

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11、

agreement on collaboration in the development and exploitation of the gas centrifuge process for producing enriched uranium;

关于合作研发利用气体离心法生产浓缩铀的协定；

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12、

what they realized is that when people saw the smoke from chimney atop the sistine chapel ,

他们意识到当人们看到西斯廷教堂烟囱中的烟不再冒出，

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13、

benedictine chant and music in the sistine chapel

本尼迪克特教团圣歌和的音乐西斯廷教堂

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14、

vatican museums (sistine chapel), vatican city

梵蒂冈梵蒂冈博物馆（西斯汀礼拜堂）

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15、

michelangelo, who adorned the sistine chapel with vibrant male nude;

米开朗基罗以充满活力的男性裸体画来装点西斯廷教堂；

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16、

in the afternoon, the 115 voting cardinals, those under 80 years old enter the sistine chapel where each will take an oath of secrecy.

而在下午，115名80岁以下参与投票的红衣主教们将进入西斯廷教堂，每个人那里都需要先进行秘密发誓。

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17、

but i bet you can't tell me what it smells like in the sistine chapel.

不过我赌你连站在西斯廷教堂里是什么感觉都说不出。

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18、

the fresco in the sistine chapel are world-famous.

西斯廷教学的壁画举世闻名。

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19、

we enter the official private church of the pops, called the sistine chapel.

现在我们进入教皇的官方私人教堂，名为西斯廷教堂。

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20、

michaeangelo's paintings in the sistine chapel are the most famous of all frescoes.

米开朗琪罗在西斯廷教堂的壁画是世界上最著名的壁画。

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