The optimization of mixcomposition of concrete according the calculation of inner stress at early age may reduce the cracking risk of concrete structure.
早龄期时混凝土结构内应力的计算为优化混凝土材料的组成提供了依据，尽可能减少混凝土结构的开裂。
2
He stressed that any one person's fitness levels depend on a complex mix of factors, including genetics, exercise habits, body composition and overall health.
他强调道，任何一个人的健康水平取决于多方面因素的影响，包括遗传、锻炼习惯、身体成分及整体健康状况。
3
"It so happens that if you bring a solar component in and mix it with that fractionated krypton, you get the present atmospheric composition," Pepin explains.