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- nuclear track plate 核径迹干板
- An analysis of asymmetric etch demonstrated that the nuclear track membranes can be prepared with smaller pore size than that with the normal etch. 不对称蚀刻法的分析表明,在灵敏度不变时可以得到小孔径核孔膜。
- The latter part of commodity processing finally get the nuclear track microhole anti-false ID or other form of nuclear microhole anti-false products. 末了不纬过后期商品增工获得核径迹微孔不攻伪不本记或其它步不天的核径迹微孔不攻伪技艺产物。
- The Si-Mn steel track plate and pin usually exist the early abrasion, one of the main reasons is the burr defect of pin hole. 硅锰钢履带板销孔存在脉纹铸造缺陷是造成履带板与履带销出现早期磨损现象的根本原因之一。
- Investigations were made of indoor radon concentrations for decorated dwellings using solid state nuclear track detectors(SSNTD). 采用固体核径迹探测器(SSNTD),对装修后的房屋进行室内氡浓度调查。
- The Si-Mn steel track plate and pin usually exist the early abrasion,one of the main reasons is the burr defect of pin hole. 硅锰钢履带板销孔存在脉纹铸造缺陷是造成履带板与履带销出现早期磨损现象的根本原因之一。
- This paper describes the principle, method, precision, range and prospect of application of nuclear track membrane to determination of solute concentration. 本文对用核孔膜测定溶液浓度的原理、方法、精确度、适用范围和应用前景进行阐述。
- Replacing quartz sand with mullite sand, the high temperature intension of sand core can be improved, the burr defect is avoiding, the quality and life of track plate and pin are improved. 利用莫莱石砂替代石英砂生产履带板砂芯可提高其抗高温开裂强度,消除履带板销孔的脉纹铸造缺陷,提高履带板与履带销的质量与使用寿命。
- The plastic nuclear track detector CR-39 is exposed for about 10 hours in balloon observation in 1982.The relative abundance (E>3.6 GeV/n) of the galactic cosmic rays is obtained and compared the result with the satellite data. 在1982年的气球飞行中;球载塑料核径迹探测器CR-39在气球高度飞行了10小时.;测得E>3
- Methods Rn and its progeny concentrations, outdoors and indoors, were obtained by using Rn - Tn solid state nuclear track detectors developed by Nagoya University, Japan, and potential energy analysis method. 方法 采用日本名古屋大学提供人的Rn-Tn固体径迹探测器和子体潜能法测量了室内外~(222)Rn、~(220)Rn及其子体的浓度,用UNSCEAR 1996年报告给出的~(222)Rn、~(220)Rn剂量转换系数估算了吸入~(222)Rn和~(220)Rn子体产生的年均有效剂量。
- The cross-section samples of nuclear track membrane (NTM) for scanning electron microscopy observation were successfully prepared by combination of UV illumination and liquid nitrogen freezing. 摘要利用紫外光辐照结合液氮冷冻技术成功地制备了聚碳酸酯核径迹膜断面的扫描电子显微镜样品。
- frame-type unballasted track plate 框架式无砟轨道板
- solid state nuclear track detector 固态原子轨道检测机
- Nuclear Track Method to Measure Neutron Flux 固体核径迹法测量中子注量研究
- Adoption girder element and spring element, among them the beam element is used to imitate the tracks plate, the spring element is used to imitate to fastenings and spring bolster. 本设计中采用有限元方法来计算轨道的应力值,将浮置板转化为弹性点支撑有限长梁模型。
- Solid state nuclear track detectors 固体核径迹探测器
- Solid-state nuclear track detector CR-39 固体核径迹探测器CR-39
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- A new nuclear power station is on the stocks here. 这座新的核电站在建造之中。
- CR-39 solid state nuclear track detector CR-39固体核径迹探测器