【英文标准名称】:Gradingofdiamondpowderinsub-sievesizes
【原文标准名称】:亚筛微粒结砂轮疲劳度的检验程序
【标准号】:ANSIB74.20-1981
【标准状态】:作废
【国别】:美国
【发布日期】:1981
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:检验;粉末;按大小分级;筛选(大小);定性分析;粒度分选;研磨粉;分级(质量)
【英文主题词】:sizeanalysis;sizeranges;grainsizing;sizeclassification;abrasivepowders;powder;qualitativeanalysis;sizedesignations;screening(sizing);inspection;grading(quality)
【摘要】:
【中国标准分类号】:J43
【国际标准分类号】:03_120_10;25_100_70
【页数】:2P;A4
【正文语种】:英语


Product Code:SAE AS8025
Title:Passenger Oxygen Mask
Issuing Committee:A-10 Aircraft Oxygen Equipment Committee
Scope: This standard establishes the minimum requirements for the design, construction and performance of continuous flow oxygen masks for passenger cabin occupants in civil commercial aircraft. This standard covers oronasal type masks which use a continuous flow oxygen supply. Each such mask comprises a facepiece with valves as required, a mask suspension device, a reservoir, or rebreather bag (when used), a length of tubing for connection to the oxygen supply source, and a means for allowing the crew to determine if oxygen is being delivered to the mask. The assembly shall be capable of being stowed suitably to meet the requirements of its intended use.