本底

The author deduced a formula to compute theaccidental coincidence of the random signals. With this formula thebackground due to the accidental coincidence of the μ chamber iscalculated.

推导了多个随机信号发生偶然符合的计数率计算公式，并用这个公式对L3μ漂移室产生的偶然符合本底进行了估算。

The results show that the air over Wudaoliang area is very clean, and anthropogenic effect is little.

分析结果表明：五道梁地区的空气清洁，人为影响很小，是适合于建立全球大气本底污染监测站的地区。

This is the background noise amplifier.

这才是放大器的本底噪声。

The increase in frequencey of chromosome aberrations in the high background radiation area is discussed.

对高本底地区居民外周血淋巴细胞染色体畸变频率的增加进行了讨论。

An adaptive response can also be induced in lymphocytes in vivo by high background radiation.

在人体内受到天然高本底辐射照射的淋巴细胞同样能产生适应性反应。

The data from the investigation of macro benthos in the area near the sewage outfall project of Kanmen, in which 24 species were found, is analyzed.

通过对2002年8月坎门排污工程邻近海域大型底栖生物本底调查资料的分析，该海域发现大型底栖生物24种，生物数量分别为45.98g/m2和142个/m2。

An about 18-day test run has been finished and the veto efficiency of CsI crystal anti-Compton detector is about 31% and the event rate of background spectrum of HPGe detector is about 133cpd.

实验数据表明，CsI晶体探测器的反符合效率约为31％，HPGe探测器的本底计数率水平约为 133cpd。

Dark matter ; CsI（T1） crystal detector ; pulse shape discrimination ; internal background

暗物质； CsI探测器；脉冲形状甄别；内部本底

Signal intensity and system blank of five argon isotopes obtained indicate that the system blank level adopted by the authors is low enough to get a reasonable isochron age for single mineral grains frown Mesozoic or older samples.

获得的5个氩同位素空白本底水平表明，本系统已经完全具备对中生代或更老的地质样品进行单颗粒全熔法等时线定年的能力。

First, the background spectrum is subtracted from experimental one; Second, by the spectrum stripping, the counts came from partial energy deposition of incidence photon in HPGe crystal, such as Compton scatting or pair production; the next, transform the experimental spectrum to the incidence photon flux spectrum.

实验数据的处理过程有三步：1 从实验谱中减掉本底谱；2 实验谱中分离掉各种能量的入射光子在晶体中的部分能量沉积(康普顿散射、电子对效应)：3 处理过的实验谱转成入射光子通量谱。比较结果显示，在本实验中，模拟谱对实验谱的总计数相对偏差不大于20%，两者基本符合。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。