How about 20 % advance by TT and the balance against faxed documents?

的TT预付,余款见文件传真付清如何?

How about 20% advance by TT and the balance against faxed documents ?

的TT预付， 余款见文件传真付清如何?。

Is the decision of how to kill something a minor decision when balance against the decision of whether or not to kill it at all?

与是否杀掉一只动物相比，杀掉的方式是否更微不足道？

During the running time, the particles are updated through the combination form of chaos update and particle swarm update so that the global convergence could balance against local convergence.

在算法运行过程中，对粒子的位置进行混沌更新和粒子群更新相结合的更新方式，使全局收敛与局部收敛达到一定平衡。