That leads to biquadratic equations for solution.它们又引出待解的双二次方程.The global topological structure of the biquadratic systems is discussed and their coefficient conditions are given.讨论了一类齐四次系统的全局结构,并给出了它们的系数条件.In this paper...
When would be the best time to start weaning my baby?什么时候开始给我的孩子断奶最好？Weaning should be a gradual process.断奶要一步步来。Phil took the labrador home and is weaning him off milk on to meat.菲尔把拉布拉多犬带回了家，正给它断奶，改喂肉食。...
Our army completely surrounded and corked up the enemy stronghold.我军把敌人的堡垒完全包围并封锁起来.He kept his emotions corked up inside him.他把感情深藏于内心.The bottles have all been corked up.瓶子都已经塞好了....