查询词典 crystal detector

A new method to measure the density of bone mineral by using the CZT crystal detector was put forward in this paper.

提出了一种应用碲锌镉晶体探测器的骨矿密度测量方法。

As a low temperature crystal detector, for ~(241)Am alphasource, the resolution of 17% is obtained.

作为低温晶体探测器，对~(241)Am-α放射源，分辨率为17％。

A piezoelectric crystal detector method is propsed for the microdetermination of nitrite.

研究了用压电频移分析法测定食品中的痕量亚硝酸盐。

Study on the performance of BGO scintillant crystal detector.

BGO闪烁晶体探测器性能的研究。

After above research, the final design of CsI crystal detector for TEXONOhas been adopted, the parameters of detector are determined and the expectedexperimental goal is realized.

通过以上的研究，最终确定了TEXONO实验CsI(T1)晶体探测器的设计方案，工作条件，并达到预期的性能指标。

The study of the quality factor K shows that the capability of PSD becomes weaker when the energies of events decrease, the lowest threshold of about 25 photoelectrons has been obtained for CsI crystal detector by PSD.

对品质因子K的研究表明，脉冲甄别方法的甄别能力随反冲核信号与电子信号能量的降低而减弱。

The γ energy spectrums in NaI crystal detector are obtained by establishing a correlation between the deposit energy of γ photon and the output of pulse amplitude.

直接以γ光子在NaI(T1)闪烁晶体中的沉积能量近似对应实际γ能谱仪的脉冲幅度输出。从而得到NaI(T1)探测器中γ射线的响应谱线。

The Sino-Italy collaborative DAMA experiment aims to search for WIMPsusing NaI crystal detector. It has the same ultimate goal with L3＋Cosmics.

中意合作的DAMA粒子暗物质实验是一项用NaI晶体直接寻找WIMP的实验，它与寻找重粒子的实验具有相同的终极目标。

FLJ-1 Flowmeter of coal powder is a glistenning crystal detector which applies the source 238Pu and is designed according to the principle of γ-ray absorption.

FLJ-1型煤粉流量计是以闪烁晶体为探测器，选用238Pu源根据γ射线吸收原理设计制造的。

Under the condition of the borehole and sandstone formation filling with oil and water, respectively, the ability is different when different energy windows are selected to distinguish formation by simulating the detector response spectrum of various diameters and length of NaI and BGO crystal. The C/O value difference of BGO crystal is higher than that of NaI crystal when the energy window includes photoelectric peak, the first and the second escape peaks, but it is less affected by the different sizes of detector crystal. Using photoelectric peak corresponding to the energy window, the C/O value difference of BGO crystal detector is much larger than that of NaI, but it increases with the crystal size increasing. The C/O value is greatly affected by energy drifting, while relatively a little by energy resolution.

对于井眼和地层流体分别为油和水砂岩地层，模拟改变NaI和BGO晶体探测器的直径和长度时的非弹性散射γ射线响应能谱，采用不同能窗处理方法对地层流体的分辨能力不同，选取光电峰和第一、第二逃逸峰对应的能量窗时，BGO晶体探测器比NaI晶体探测器测量的C/O差值大，但受尺寸的影响不大；采用光电峰对应的能量窗时，BGO晶体探测器测量的C/O差值比NaI的大得多，且随尺寸的增加差值增大；能量道的漂移对C/O值影响较大，而能量分辨率对差值影响相对较小。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。