首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 62 毫秒
1.
序号国家标准编号国家标准名称代替标准号批准日期实施日期1GB/T77-2007内六角平端紧定螺钉GB/T77-20002007-07-022007-12-012GB/T78-2007内六角锥端紧定螺钉GB/T78-20002007-07-022007-12-013GB/T79-2007内六角圆柱端紧定螺钉GB/T79-20002007-07-022007-12-014GB/T80-2007内六  相似文献   

2.
国家质量监督检验检疫总局、国家标准化管理委员会批准以下220项国家标准,现予以公布。二六年十二月二十二日序号国家标准编号国家标准名称代替标准号批准日期实施日期1GB/T225-2006钢淬透性的末端淬火试验方法(Jominy试验)GB/T225-19882006-11-012007-02-012GB/T538-2006工业硼酸GB/T538-19902006-09-012007-02-013GB/T605-2006化学试剂色度测定通用方法GB/T605-19882006-11-032007-06-014GB/T609-2006化学试剂总氮量测定通用方法GB/T609-19882006-11-032007-06-015GB/T611-2006化学试剂密度测定通用方法GB/T611-19882006-11-…  相似文献   

3.
2006年第2号(总第89号)国家质量监督检验检疫总局、国家标准化管理委员会批准以下111项国家标准,现予以公布。二六年三月三十日序号国家标准编号国家标准名称代替标准号批准日期实施日期1GB/T222-2006钢的成品化学成分允许偏差部GB/分T代2替22-:19842006-02-052006-08-012GB/T273.2-2006滚动轴承推力轴承外形尺寸总方案GB/T273.2-19982006-01-092006-08-013GB/T2774-2006金属锰GB/T2774-19912006-02-052006-08-014GB/T3450-2006铁道机车和动车组司机室噪声限值及测量方法GB/T3450-19942006-01-182006-07-015GB/T3795-2006锰铁GB…  相似文献   

4.
《中国标准化》2006,(5):33-36
2006年第3号(总第90号)国家质量监督检验检疫总局、国家标准化管理委员会批准以下113项国家标准,现予以公布。二六年四月二十四日中国标准化协会开展实施国家标准咨询、订购服务。电话:(010)8838199458607269/7429/7193/7292/7293/7190序号国家标准编号国家标准名称代替标准号批准日期实施日期1GB/T775.1-2006绝缘子试验方法第1部分:一般试验方法GB/T775.1-19872006-02-152006-06-012GB/T775.3-2006绝缘子试验方法第3部分:机械试验方法GB/T775.3-19872006-02-152006-06-013GB/T1409-2006率测和量介电质气损绝耗缘因材数料的在推工荐频…  相似文献   

5.
《中国标准化》2005,(11):33-37
国家质量监督检验检疫总局、国家标准化管理委员会批准以下168项国家标准,现予以公布。二○○五年九月二十七日序号国家标准编号国家标准名称代替标准号批准日期实施日期1GB/T469-2005铅锭GB/T469-19952005-07-042005-12-012GB/T1470-2005铅及铅锑合金板GB/T1470-19882005-07-0  相似文献   

6.
2007年第11号(总第111号)国家质量监督检验检疫总局、国家标准化管理委员会批准以下123项国家标准,现予以公布。中国标准化协会开展实施国家标准咨询、订购服务。电话:(010)68482899-871、87358607269/7429/7193/7292/7293/7190二七年十一月二十一日序号国家标准编号国家标准名称代替标准号批准日期实施日期1GB/T223.79-2007钢铁多元素含量的测定X-射线荧光光谱法(常规法)2007-09-112008-02-012GB/T223.80-2007钢铁及合金铋和砷含量的测定氢化物发生-原子荧光光谱法2007-09-112008-02-013GB/T223.81-2007质钢谱铁法及合金总铝和总硼含量…  相似文献   

7.
《中国标准化》2008,(1):40-46
序号备案号行业标准编号行业标准名称代替标准号批准日期实施日期标准主管部门121686-2007LS/T3704-2007和小试麦验硬方度法指数测定仪技术条件2007-09-292007-11-01国家粮食局221687-2007JB/T1246-2007真空技术滑阀真空泵JB/T1246-19972007-08-282008-02-01国家发展和改革委员会321688-2007JB/T6923-2007真空技术真空-加压浸渍设备JB/T6923-19932007-08-282008-02-01国家发展和改革委员会421689-2007JB/T9125-2007真空技术涡轮分子泵JB/T9125-19992007-08-282008-02-01国家发展和改革委员会521690-2007JB/T10770-2007真空技术液…  相似文献   

8.
序号备案号地方标准编号地方标准名称代替标准号批准日期实施日期标准主管部门120336-2007DB31/T378-2007旅馆服务质量要求2007-02-152007-05-01上海市质量技术监督局220337-2007DB31/195-2007色拉卫生标准DB31/195-19972007-02-062007-08-01上海市质量技术监督局320339-2007DB61/T377.1-2006汉中绿茶午子仙毫茶2006-02-232006-02-23陕西省质量技术监督局420340-2007DB61/T377.2-2006汉中绿茶定军茗眉茶2006-02-232006-02-23陕西省质量技术监督局520341-2007DB61/T377.3-2006汉中绿茶宁强雀舌茶2006-02-232006-02-23陕西省质量技术监…  相似文献   

9.
2006年第1号(总第88号)批准以下128项国家标准,现予以公布。二六年一月二十四日中国标准化协会开展实施国家标准咨询、订购服务。电话:(010)8838199458607269/7429/7193/7292/7293/7190序号国家标准编号国家标准名称代替标准号批准日期实施日期1GB/T1032-2005三相异步电动机试验方法GB/T1032-19852005-09-192006-06-02GB/T1695-2005硫化橡胶工频击穿电压强度和耐电压的测定方法GB/T1695-19812005-09-152006-05-03GB/T2424.2-2005电工电子产品环境试验湿热试验导则GB/T2424.2-19932005-09-192006-06-04GB/T3402.1-2005塑料氯乙烯均…  相似文献   

10.
2006年第8号(总第95号)国家质量监督检验检疫总局、国家标准化管理委员会批准以下161项国家标准,现予以公布。二六年八月二十四日中国标准化协会开展实施国家标准咨询、订购服务。电话(:010)8838199458607269/7429/7193/7292/7293/7190序号国家标准编号国家标准名称代替标准号批准日期实施日期1GB/T131-2006产品几何技术规范(GPS)技术产品文件中表面结构的表示法GB/T131-19932006-07-192007-02-012GB/T1525-2006制图纸GB/T1525-19792006-03-312006-10-013GB/T1557-2006硅晶体中间隙氧含量的红外吸收测量方法GGBB//TT114515743--11…  相似文献   

11.
12.
Diamond-like-carbon (D.L.C.) films are characterized by a low friction coefficient, a high wear resistance and a high corrosion resistance. D.L.C. films can be obtained by P.V.D., C.V.D. and duplex techniques with solid or gaseous precursors. Depending on the processing, hydrogen concentration ranges between 0 and 60%

In this study, hydrogenated D.L.C. has been deposited with a radio frequency system (13.56 MHz) onto a steel substrate. Wear was studied by pin-on-disc testing at room temperature with an alumina counterpart. Interrupted tests were carried out to go into wear mechanisms. Debris were collected after various given sliding times for transmission electron microscopy (T.E.M.) in addition to scanning electron microscopy (S.E.M.) applied to the wear tracks.  相似文献   

13.
14.
《Zeolites》1989,9(6):509-515
27Al and 31P magic angle spinning (MAS) n.m.r. and e.s.r. measurements have been performed on MnAlPO5 in order to obtain direct evidence for Mn+2 incorporation into tetrahedral sites in the framework. Two samples differing in their Mn content have been studied, and their results were compared with those obtained from impregnated Mn-AlPO5 and exchanged Mn-SAPO5 where the Mn+2 does not occupy framework sites. The MAS n.m.r. spectrum showed a large anisotropy, manifested in numerous side bands due to the paramagnetic shifts induced by dipolar interactions between the unpaired electrons of the Mn+2 and the 31P and 27Al nuclei in its vicinity. On dehydration, a considerable linewidth narrowing has been observed, attributed to a decrease in the electronic relaxation time induced by increase in Mn+2 spin-exchange interaction. Calculated31P MAS n.m.r spectra, where the paramagnetic shift anisotropy was obtained from X-ray diffraction data of AlPO5 and taking into account the Mn content obtained from the chemical analysis, showed qualitative agreement with the experimental spectra. Comparison of the simulated and experimental spectra indicates that, indeed, part of the Mn+2 cations occupy framework sites; it does, however, also suggest that extraframework Mn+2 cations are present as well. These conclusions are further supported by e.s.r. measurements. The e.s.r. spectrum of MnAlPO5 shows resolved hyperfine lines with splitting characteristics of octahedral Mn+2, supporting the existence of extraframework Mn+2. On dehydration, the spectrum of MnAlPO5 coalesce into a single absorption line. This coalescence is attributed to increase in the spin-exchange interaction due to migration of probably extraframework Mn+2 toward the framework.  相似文献   

15.
16.
17.
Summary In order to provide a firmer foundation on which some reciprocity theorems in Eshelbian mechanics where established earlier, a nonlinear and then linearized formulation of these theorems is presented. To carry out the required operations a simple two-degrees-of-freedom system was chosen. The analysis led to mostly algebraic expressions which are also illustrated graphically. Readers will be very sad to learn of the mournful death on January 7, 2007, of Prof. Dr. sc. techn. Dr. h. c. George Herrmann. Dedicated to Professor Franz Ziegler on the occasion of his 70th birthday  相似文献   

18.
19.
20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号