However, the setting and hardeningtime of the concrete, the mortar influences the test results obviously.
混凝土﹑水泥砂浆﹑环氧树脂砂浆的凝结硬化时间长短对测试结果有比较显著的影响。
3
Parents who smoke in the home can cause their child's arteries to show signs of clogging and hardening, dramatically raising their overall life-time risk of heart attack.