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  instrument
    Type FD-136 Water-Surveying Instrument
    FD-136型γ找水
短句来源
    On-line radioisotope X-ray fluorescence instrument used for the thickness measurement of coating layer on tapes
    同位素源磁带涂层在线X射线荧光测厚
短句来源
    A liquid scintillation nuclear activity metrology instrument
    液体闪烁核活度计量
短句来源
    XFT-84 microcomputer-based X-ray fluorescent coating thickness measurement instrument
    XFT-84基于微机X荧光涂层测厚
短句来源
    DESIGNING MEANS AND SPECIFICATIONS FOR MODEL FT-619 KIDNEY FUNCTION INSTRUMENT
    FT-619型肾图设计方法和主要性能
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  apparatus
    Development of REM-Ⅱ radon exhalation rate measuring apparatus
    REM-Ⅱ型氡析出率的研制
短句来源
    Figure transfer process is studied, and the transfer precision and surface roughness of the sinusoidal perturbation is measured by α step apparatus and atom force microscope.
    采用台阶和原子力显微镜监控图形转移过程 ,比较了光刻胶表面图形和一次、二次电镀转移图形以及转移到聚苯乙烯薄膜上图形的形貌 ,测定了图形转移过程中的深度变化
短句来源
    An atmospheric corrosion accelerated test apparatus for oxidation studies of uranium and its alloys is developoed.
    研制了一种适合于铀及合金大气腐蚀加速试验的流动气体氧化研究
短句来源
    A measuring apparatus for measurement of medium surface radon exhalation rate is illustrated. The author uses the detection chamber with electrostatic collection to measure the particle pulse counting emitted by the clecaying 218 Po of radon.
    介绍了一种可携式介质表面氡析出率 ,该器用静电收集探测室对氡衰变的 2 18Po所释放的 α粒子脉冲计数进行测量。
短句来源
  meter
    Model CS-101 radioisotope underground water detector- A γ-ray activity meter used for surveying underground water source
    寻找地下水源的γ强度计——CS-101型同位素测水
短句来源
    KD-402 activity meter
    KD-402γ活度
短句来源
    AN ENVIRONMENTAL γ-RAY EXPOSURE RATE METER WITH GATING MODE
    选通式环境γ照射量率
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    CALCULATIONS OF DOSIMETRIC PARAMETER AND REM METER RESPONSE FOR Be(d, n) SOURCE
    Be(α,n)剂量参数与REM响应的计算
短句来源
    CALCULATIONS OF DOSIMETRIC PARAMETER AND REM METER RESPONSE FQR Be (α,n) SOURCE
    Be(α,n)剂量参数与REM响应的计算
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  “仪”译为未确定词的双语例句
    Type 743 1 γ scintillation thickometer
    743-1型γ闪烁测厚
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    PORTABLEα、βCONTAMINATION MONITOR TYPE XWY1
    XWYI型可携式α,β表面污染
短句来源
    Model DTF-1 γ ray water searcher
    DTF-1型γ射线找水
短句来源
    MODEL Scs-35 β RAY THICKNESS GAUGE
    Scs—35型β射线测厚
短句来源
    CALIBRATION OF ENVIRONMENTAL γSCINTILLATION DOSERATEMETER
    环境辐射 γ 闪烁剂量率的刻度
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  instrument
Longitudinal sawn wood are usually selected as samples in the study of sound properties of a musical instrument board.
      
The liver fibrogenesis was assessed using a digital image analysis instrument of Masson's trichrome stained sections.
      
The dispersibility and electrophoretic mobility of these particles in tetrachloroethylene (TCE) have been investigated by laser particle size analyzer, static sedimentation and electrophoretic instrument.
      
The morphology was characterized by scanning electron microscopy (SEM), and the average size and the size distribution were determined by a laser-size distributing instrument.
      
Their cross sectional distribution patterns in relation to the river channel morphologies were examined by using ship-mounted ADCP (Acoustic Doppler Current Profiler) instrument.
      
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  apparatus
In fluorescent quenching experiments, fluorescence changes were automatically recorded in real time by combining the Microlab 500 Series Dispenser and PTI fluorescence apparatus.
      
We found a new structure named solicitation speckle at the low latitude of the animal pole and near the micropylar apparatus between the ovum envelope and cell membrane in the zygote of fish.
      
At the same time, the same thing happened near the micropylar apparatus before cortical reaction.
      
Both starting points encountered and healed up at the vestibule of the micropylar apparatus.
      
The pressure drop of a cross-flow moving-bed was investigated in a two-dimensional rectangular apparatus.
      
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  meter
The relative dielectric constant εr and the dissipation factor tgδ of the PZT thin films were measured with an LCR meter and were found to be 158 and 0.04-0.005, respectively.
      
The DTV positioning that has a sub-meter level ranging error and meter level positioning accuracy can parallel with and even taken as a beneficial substitute for the tradition positioning technology.
      
Relay measurement method, which uses the kilogram-meter (KGM) measurement system to identify volumetric errors on the planes of computer numerical control (CNC) machine tools, is verified through experimental tests.
      
As an example, the safe basins on the rolling initial value plane were constructed for a 30.27-meter-long fishing vessel according to different initial conditions and random wave parameters.
      
The earlier classification list of automatic liquid metering systems is supplemented with universal output-open pressurized dosing machines, which meter liquids by time.
      
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A Thin Magnetic-Lens P-Ray Spectrometer has been built and operated. The coils for exciting the magnetic field consist of two pancakes each of which has the inner radius of 9.5 cm, the outer radius of 23 cm, and the length along the axis of 8 cm. The total turns of the coils are 6580. and the weight of the coils is about 100 Kg. The vacuum tank of the instrument is made of a copper cylinder having the length of 109-5 cm, and 14 cm inner diameter. The maximum energy of the electrons focused by this instrument...

A Thin Magnetic-Lens P-Ray Spectrometer has been built and operated. The coils for exciting the magnetic field consist of two pancakes each of which has the inner radius of 9.5 cm, the outer radius of 23 cm, and the length along the axis of 8 cm. The total turns of the coils are 6580. and the weight of the coils is about 100 Kg. The vacuum tank of the instrument is made of a copper cylinder having the length of 109-5 cm, and 14 cm inner diameter. The maximum energy of the electrons focused by this instrument is 3 Mev (corresponding a spend of 1070 watts). When a source of 5 m.m. diameter is used, the resolution of the instrument is 2-8%, while the corresponding transmission is 0.27%.

一台薄磁透镜β-射线能谱已经建成并开始工作。它的磁场线圈由两个具有内外半径分别为9.5cm和22cm,轴向长8cm的线包并排组成,总匝数为6580匝,总重量约100公斤;真空室由长109.5cm,内直径14 cm的无缝紫铜管作成,这台谱能聚焦的电子的最大能量为3 Mev(对应功率消耗约1070瓦)。当使用直径5 m.m.的源时,在0.27%的传射率下,器的分辨率是2.8%。

In this paper, a design of a low energy β-ray contamination detector is described, In order to increase the detection sensitivity the probe is improved particularly. Thus, the β-ray detection efficiency for Pm147(Eβmax =220 kev)is≈30%, for C14(Eβmax =156 kev) is≈20% and for Ni63 (Eβmax=67 kev) is≈5%. By means of adopting new technique, for instance, CMOS integrated circuits, and improved power supply circuit, the detector is comparatively convenient and light-weighted.

本文介绍了一种低能β射线污染测量。 为了提高器量测的灵敏度,对探头做了专门改进,β射线的探测效率,对于Pm147(Eβmax= 220kev)为~30%,对于C14(Eβmax=156kev)为~20%,以及对于Ni63(Eβmax=67kev)为~5%。 由于采用了新技术,如CMOS集成电路,并且改进了供电电源,器比较轻便适用。

The cumulative yields of 95Zr, "Mo, 103Ru, 106Ru, 144Ce and 147Nd in the fission of 238U induced by neutrons of 14.9 MeV were determined absolutely by radiochemical method. The 14.9±0.46 MeV neutrons were produced in the T (D,n)'He reaction using the 600kV Cockcroft-Walton type accelerator. The neutron flux varied between 2×109 and 1010 neutrons/sec. In this work the natural uranium was used as material of sample and standard targets. The standard targets were prepared by molecular plating and the sample targets...

The cumulative yields of 95Zr, "Mo, 103Ru, 106Ru, 144Ce and 147Nd in the fission of 238U induced by neutrons of 14.9 MeV were determined absolutely by radiochemical method. The 14.9±0.46 MeV neutrons were produced in the T (D,n)'He reaction using the 600kV Cockcroft-Walton type accelerator. The neutron flux varied between 2×109 and 1010 neutrons/sec. In this work the natural uranium was used as material of sample and standard targets. The standard targets were prepared by molecular plating and the sample targets were uranium metal disks with masses ranging from 1.5 to 3 gramms. The absolute fission rate of the sample target was measured by double fission ionization chamber.The irradiated targets were dissolved, and carriers of each element were added. By means of modified standard radiochemical procedures the above mentioned nuclides were separated, purified and mounted. The radioassay of radionuclides separated from the sample was carried out by using two types of detectors, namely, a low background counter for β-counting, and Nal(Tl) crystal detector coupled with a single channel analyzer for γ-counting. Both of the detectors were calibrated by 4π/β-γ coincidence counting.The cumulative yields determined by the above mentioned method are listed in following table. The errors given in the table are total errors including statistical and systematic errors. The yield values of this work are found to be in good agreement with most reported yields within error limits.

本文叙述了用放化方法测定14.9MeV中子诱发~(238)U裂变时的裂变产物~(95)Zr,~(99)Mo,~(103)Ru,~(106)Ru,~(144)Ce和~(147)Nd的绝对累计产额,其结果分别为(4.96±0.22)%,(5.44±0.20)%,(4.75±0.23)%,(2.51±0.13)%,(4.01±0.21)%和(2.13±0.11)%。裂变率是用双裂变室测量的,裂变产物核的衰变率用经4πβ-γ符合法刻度过的低本底2πβ卢和NaI(T1)测量测定。

 
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