“ballastless”的概念、定义、翻译、参考文献-科学参考

单词	ballastless
释义	ballastless Encyclopedia 工学道床结构释 ballastless有砟道床通常由具有一定粒径、级配和强度的硬质碎石堆集而成，碎石之间存在着空隙和摩擦力，使得轨道具有一定弹性的道床。
随便看	forest harvesting quota system forest health forest health management forest highway culvert forest humus Forest Hydrology forest hydrology forest income forest industry forest insect pests forest insurance forest inventory forest inventory planning forestland asset forestland differential rent forestland evaluation forestland expectance value forestland expense value method forest land fertilization forestland net benefit forestland ownership forestland price forest land productivity forestland rent forest landscape

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。