【英文标准名称】:Templatesforletteringandsymbols;part2:slotwidthsforwood-casedpencils,clutchpencilsandfine-leadpencils
【原文标准名称】:书写和符号的模板第2部分:木杆铅笔、活动铅笔和细铅笔的槽宽
【标准号】:ISO9178-2-1988
【标准状态】:作废
【国别】:国际
【发布日期】:1988-12
【实施或试行日期】:1988-12-01
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC10
【标准类型】:()
【标准水平】:()
【中文主题词】:式样;字母;尺寸;制图设备;卡规;绘图室设备;图形符号
【英文主题词】:letters(symbols);dimensions;graphicsymbols;crayons;templates;patterns;drawingsystem;drawingofficeequipment;recordingdevices;slotwidth;templatesforlettering;templatesforsymbols
【摘要】:
【中国标准分类号】:Y50
【国际标准分类号】:01_100_40
【页数】:4P;A4
【正文语种】:英语


【英文标准名称】:StandardGuideforUseofSpectralSearchingbyCurveMatchingAlgorithmswithDataRecordedUsingMid-InfraredSpectroscopy
【原文标准名称】:通过曲线匹配算法和用中间红外线分光镜记录的数据的光谱搜索的使用指南
【标准号】:ASTME2310-2004(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E13.03
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:infrared;searchalgorithms;spectralsearch;spectroscopy;Algorithms;Infraredspectroscopy;Molecularspectroscopy
【摘要】:1.1Spectralsearchingistheprocesswherebyaspectrumofanunknownmaterialisevaluatedagainstalibrary(database)ofdigitallyrecordedreferencespectra.Thepurposeofthisevaluationisclassificationoftheunknownand,wherepossible,identificationoftheunknown.Spectralsearchingisintendedasascreeningmethodtoassisttheanalystandisnotanabsoluteidentificationtechnique.Spectralsearchingisnotintendedtoreplaceanexpertininfraredspectroscopy.Spectralsearchingshouldnotbeusedwithoutsuitabletraining.1.2TheuserofthisdocumentshouldbeawarethattheresultsofaspectralsearchcanbeaffectedbythefollowingfactorsdescribedinSection5:(1)baselines,(2)samplepurity,(3)Absorbancelinearity(Beerx2019;sLaw),(4)samplethickness,(5)sampletechniqueandpreparation,(6)physicalstateofthesample,(7)wavenumberrange,(8)spectralresolution,and(9)choiceofalgorithm.1.2.1Manyotherfactorscanaffectspectralsearchingresults.1.3Thescopeofthisdocumentistoprovideaguidefortheuseofsearchalgorithmsformid-infraredspectroscopy.Themethodsdescribedhereinmaybeapplicabletotheuseofthesealgorithmsforothertypesofspectroscopicdata,buteachtypeofdatasearchshouldbeassessedseparately.1.4TheEuclideandistancealgorithmandthefirstderivativeEuclideandistancealgorithmaredescribedandtheirusediscussed.Thetheoryandcommonassumptionsmadewhenusingsearchalgorithmsarealsodiscussed,alongwithguidelinesfortheuseandinterpretationofthesearchresults.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.
【中国标准分类号】:A42
【国际标准分类号】:71_040_50
【页数】:10P.;A4
【正文语种】:英语