帮个忙！！！！土木工程中各种力学的英语翻译

材料力学：Materials mechanics
结构力学：structure mechanics
水力学：water power
弹力力学：elastic forces
理论力学：theoretical mechanics
钢结构：steel ties
土力学：productive capacities of the soil

Materials mechanics
structure mechanics
water power
elastic forces
theoretical mechanics
steel ties
productive capacities of the soil