国产aaaa级全身裸体精油片_337p人体粉嫩久久久红粉影视_一区中文字幕在线观看_国产亚洲精品一区二区_欧美裸体男粗大1609_午夜亚洲激情电影av_黄色小说入口_日本精品久久久久中文字幕_少妇思春三a级_亚洲视频自拍偷拍

首頁 > materials
  • GB/T 16507.2-2022水管鍋爐 第2部分：材料Water-tube boilers—Part 2: Materials2022-10-26
  • GB/T 4340.4-2022金屬材料 維氏硬度試驗 第4部分: 硬度值表Metallic materials—Vickers hardness test—Part 4：Tabl...2022-10-26
  • GB/T 18449.4-2022金屬材料 努氏硬度試驗 第4部分: 硬度值表Metallic materials—Knoop hardness test—Part 4: Tab...2022-10-26
  • JB/T 7925.1-1995滑動軸承單層軸承減摩合金硬度檢驗方法Plain bearings-Hardness testing of bearing metals-Solid ...2022-06-14
  • GB 15763.1-2009建筑用安全玻璃.第1部分:防火玻璃Safety glazing materials in building—Part 1:Fire-resistant gl...2022-06-15
  • JB/T 4114-1999燒結(jié)純鐵軟磁材料.技術(shù)條件Specification for sintered iron soft magnetic materials2022-06-14
  • GB/T 25165-2010明膠中牛、羊、豬源性成分的定性檢測方法 實時熒光PCR法Protocol of identification of bovine,capr...2022-06-14
  • GB/T 17809-1999阻尼材料 復(fù)模量圖示法Damping materials--Graphical presentation of the complex modulus...2022-06-14
  • GB/T 20285-2006材料產(chǎn)煙毒性危險分級Toxic classification of fire effluents hazard for materials2022-06-12
  • SJ/T 10246-1991微波介質(zhì)材料.A—陶瓷A-Ceramic for microwave dielectric materials2022-06-12
  • GB/T 9637-2001電工術(shù)語 磁性材料與元件Electrotechnical terminology--Magnetic materials and components...2022-06-10
  • JJG 406-1986弱磁材料標(biāo)準(zhǔn)樣品試行檢定規(guī)程for Standard Sample of Feebly Megnetic Materials2022-06-10
  • GB/T 239.2-2012金屬材料.線材.第2部分:雙向扭轉(zhuǎn)試驗方法Metallic materials - Wire - Part 2: Reverse torsion tes...2022-06-10
  • YC/T 414-2011煙用標(biāo)準(zhǔn)樣品編碼規(guī)則Reference materials coding rule of tobacco2022-06-09
  • GB/T 6398-2017金屬材料 疲勞試驗 疲勞裂紋擴展方法Metallic materials—Fatigue testing—Fatigue crack growth ...2022-06-09
  • SJ/T 10245-1991復(fù)合微波介質(zhì)基片Microwave ceramic dielectric materials-Microwave composite dielectric substra...2022-06-06
  • GB/T 33914-2017飼料原料 噴霧干燥豬血漿蛋白粉Feed materials—Spray-dried porcine plasma powder...2022-06-06
  • GB/T 13732-2009粒度均勻散料抽樣檢驗通則General rules for sampling inspection of bulk materials with uniform ...2022-06-06
  • GB 9656-2021機動車玻璃安全技術(shù)規(guī)范Safety technical specification for glazing materials used in power-driven ...2022-03-22
  • GB/T 3074.1-2021炭素材料抗折強度測定方法The test method for flexural strength of carbon materials...2022-03-22
  • GB/T 24183-2021金屬材料 薄板和薄帶 制耳試驗方法Metallic materials. Sheet and Strip. Earing test...2022-03-18
  • GB/T 24524-2021金屬材料 薄板和薄帶 擴孔試驗方法Metallic materials. Sheet and strip. Hole expanding test...2022-03-18
  • GB/T 37199.1-2021塑料 聚丁烯（PB）模塑和擠出材料 第1部分：命名系統(tǒng)和分類基礎(chǔ)Plastics. Polybutene(PB) moulding and ...2022-03-18
  • GB/T 40371-2021氣焊設(shè)備 焊接、切割及相關(guān)工藝設(shè)備用材料Gas welding equipment. Materials for equipment used in...2022-03-18
  • GB/T 22271.1-2021塑料 聚甲醛（POM）模塑和擠出材料 第1部分：命名系統(tǒng)和分類基礎(chǔ)Plastics. Polyoxymethylene(POM)mouldi...2022-03-14
    • 首頁上頁56789下頁尾頁