有机化合物由于结构复杂，命名是一件很麻烦的事情，不少有机化合物又有各种俗名，叫法不一，容易造成混乱。
Naming an organic compound is very troublesome for its complicated structure. Meanwhile many organic compounds have various aliases. So many names are easy to cause confusion.
它解决了现有粉末压模机的脱模装置结构复杂、稳定性差、精度不高、调整麻烦的问题。
The demoulding device solves the problems that the demoulding device of the existing powder press moulding machine has complex structure, poor stability, low precision and troublesome adjustment.
环网的瞬交流动计算问题较为复杂，需要求解高阶非线性方程组，对于复杂的网状结构，系统的自动识别或标记相当麻烦。
The calculation of the system is complex, because of solving high haw equation group. It is also a trouble to sign and identify for the equation group.
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