[水利行业标准] SD 339-1989 钛材管板焊接技术规程

2.81 MB2022-03-16

[交通书籍] 铁路安全工程 下册 [金绍元]

53.61 MB2021-08-16

[建筑书籍] 园林美学 [刘天华 著]

47.35 MB2021-08-10

[电子信息书籍] 电子技术 [黄义源]

8.75 MB2021-08-03

[矿产书籍] 煤矿机电技术基础知识 [蔡泽培 等编 ]

8.75 MB2021-07-26

[矿产书籍] 煤矿地质测量图例 [中华人民共和国能源部 编]

8.55 MB2021-07-24

[广东地方标准] DB44/1989-2017 工业废水铊污染物排放标准

814.98 KB2021-06-23

[团体标准] T/ZZB 1989-2020 陶瓷金属卤化物灯

248.32 KB2021-05-25

[化工行业标准] HG/T 20671-1989 铅衬里化工设备

24.81 MB2021-03-23

[国外标准] DIN EN 2699-1989

118.71 KB2021-01-15

[国外标准] DIN 21346-1989 导轴用的四方头螺栓

71.23 KB2021-01-09

[交通书籍] 专用汽车设计 [崔靖主编]

22.75 MB2021-01-08

[国外标准] DIN 7990-1989 钢结构用带六角螺母 六角头螺栓

236.94 KB2021-01-07

[国外标准] DIN 7969-1989 钢结构用带六角螺母的带槽沉头螺栓

190.03 KB2021-01-07

[电子信息书籍] 电子电路习题集

4.26 MB2021-01-05

[国外标准] DIN 3122-1989 Driving parts for hand operated square drive socket wrenches

286.71 KB2020-12-07

[国外标准] DIN 3090-1989 钢丝绳套环

57.52 KB2020-12-07

[国外标准] DIN 650-1989 机床 T 型槽 尺寸

105.92 KB2020-12-05

[国外标准] DIN 435-1989 工型梁用方楔形垫圈

55.48 KB2020-12-05

[国外标准] NEMA DC 5-1989(R2008) Residential Controls – Surface-Type Controls for Electric Storage Water Heater

57.31 KB2020-12-03

[国外标准] AS 3607-1989 Conductors—Bare overhead,aluminium and aluminium alloy—Steel reinforced

645.01 KB2020-11-30

[国外标准] AS 3133-1989 Approval and test specification - Air break switches

85.02 KB2020-11-30

[国外标准] AS 1650-1989 Hot dipped galvanised coating on ferrous articles

636.14 KB2020-11-30

[国外标准] AS 1074-1989 Steel Tubes and Tubulars for Ordinary Service

102.27 KB2020-11-30

[国外标准] SAE J993-1989 ALLOY AND TEMPER DESIGNATION SYSTEMS FOR ALUMINUM

46.27 KB2020-11-30