GB/T 41053-2021
全断面隧道掘进机 土压平衡-泥水平衡双模式掘进机
GB/T 34651-2017
全断面隧道掘进机 土压平衡盾构机
GB/T 35019-2018
全断面隧道掘进机 泥水平衡盾构机
JB/T 7402-2024
平行平晶
2024-10-24
JJG 28-2019
平晶检定规程
Optical Flats
2019-09-27
MIL MS51867A
WASHER, METAL, FLAT, PLAIN, RECTANGULAR (SUPERSEDING MS51867)
矩形平面金属平垫圈（取代MS51867）
1987-12-31
JIS B 1250-2008
Plain washers for metric bolts, screws and nuts for general purposes -- General plan
通用公制螺栓、螺钉和螺母用平垫圈总平面图
2008-01-01
UNE-EN ISO 887-2000
Plain washers for metric bolts, screws and nuts for general purposes - General plan. (ISO 887:2000).
通用公制螺栓、螺钉和螺母用平垫圈.总平面图 （ISO 887:2000）
2000-12-12
AS 1237.1-2002
Plain washers for metric bolts, screws and nuts for general purposes, Part 1: General plan
通用公制螺栓、螺钉和螺母用平垫圈第1部分:总平面图
2002-09-27
MIL MS17103A Notice 1-Cancellation
BEARING, ROLLER, THRUST, GROUND, SINGLE DIRECTION, INCH SIZE, FLAT FACE SURFACE, RIGID OR FLAT SEAT TYPE, WITH RETAINER (S/S BY A-A-52414)
推力滚子轴承 地面 单向 英寸尺寸 平面 刚性或平座型 带护圈（由A-A-52414提供）
1993-03-09
GB/T 43846.1-2024
显微镜 显微镜物镜的命名 第1部分：像场平面度/平场
Microscopes—Designation of microscope objectives—Part 1: Flatness of field/Plan
2024-04-25
MIL MS17103A
BEARING, ROLLER, THRUST, GROUND, SINGLE DIRECTION, INCH SIZE, FLAT FACE SURFACE, RIGID OR FLAT SEAT TYPE, WITH RETAINER (S/S BY A-A-52414)
止推滚柱轴承 地面 单向 英寸尺寸 平面 刚性或平座式 带护圈（S/S BY A-A-52414）
1966-10-18
DIN EN ISO 887
Plain washers for metric bolts, screws and nuts for general purposes - General plan (ISO 887:2000 + Cor. 1:2006)
通用公制螺栓、螺钉和螺母用平垫圈.总平面图（ISO 887-2000+Cor.1-2006）；德文版EN ISO 887:2000+AC:2006
2006-07-01
BS 2L 87-1971
Specification for hexagonal bars for nuts, couplings and hollow machined parts of aluminium-copper-magnesium-silicon-manganese alloy (solution treated and precipitation treated) (free from peripheral and asymmetric coarse grain) (not less than 14 mm nor more than 36 mm across flats) (Cu 4.4, Mg 0.5, Si 0.7, Mn 0.8)
铝-铜-镁-硅-锰合金（固溶处理和沉淀处理）螺母、联轴器和空心机加工零件用六角棒规范（无周边和不对称粗晶）（平面宽度不小于14 mm 也不大于36 mm）（Cu 4.4 Mg 0.5
1971-08-31