The low and flat wave was found more often than high diastolization wave and high cardiac atrium contraction wave. 在各种异常波型中以低平波最常见,其次是高舒张波和高房缩波。
HJA-7 and HJA-8 has a high sintered density, contraction rate, for the production of high-grade refractory materials, temperature, wear-resistant corundum products. HJA-7和HJA-8具有较高的烧结密度,地收缩率,适用于生产高档耐火材料,耐温、耐磨刚玉制品。
Adopting the routine concrete's producing technologies of high strengthening, compensating contraction and self-compacting, develops the high strength and low brittleness recycled concrete, mini-dry shrinkage and high strength recycled concrete and large fluidity and high strength recycled concrete. 借鉴常规混凝土的高强化技术、补偿收缩技术和自密实技术,开发出了高强低脆再生混凝土、微干缩高强再生混凝土和大流动性高强再生混凝土。
Research on High Mn Gray Iron with High Strength and Low Contraction 高强度低收缩高锰灰铁的研究
An approach to seismic response analysis of high arch dams with contraction joints 设有横缝的高拱坝地震反应分析方法