Admixtures for concrete, mortar and grout. Test methods. Part 1: reference concrete and reference mortar for testing.
英
美
- 混凝土添加剂.；砖石和灰浆
- 今日热词
-
- 深远海浮式风电平台 - deep-sea floating wind power platform
-
- 京雄高速公路 - Beijing-Xiongan expressway
-
- 农业及相关产业增加值 - the added value of agriculture and related industries
