“placental retention”的概念、定义、翻译、参考文献-科学参考

单词	placental retention
释义	placental retention Encyclopedia 农学繁殖障碍释 placental retention胎盘滞留母畜娩出胎儿后，胎盘在第三产程的生理时限内未能排出的现象。又称胎衣不下。
随便看	hyperbolic straight line hyperbolic strange attractor hyperbolic structure hyperbolic substitution hyperbolic surface hyperbolic system hyperbolic system of differential equations hyperbolic tangent hyperbolic tetrahedron hyperbolic tiling hyperbolic toral automorphism hyperbolic transfinite diameter hyperbolic transformation hyperbolic triangle hyperbolic trigonometry hyperbolic type hyperbolic umbilic hyperbolic umbilic catastrophe hyperbolic variational inequation hyperbolic velocity hyperbolic volume hyperbolic waves hyperbolic web of spheres hyperbolism hyperbolograph

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。