It is not always practicable, however, to have a balanced runner system and this particularly applies to moulds which incorporate a large number of differently shaped impressions.
然而，只用平衡式浇注系统特别是用到多型腔模具中不是一直可行的。
You should wear performance-training shoes if you are a runner who wants a light, well-balanced shoe suitable for racing, speedwork, or daily training.
如果你在为竞赛、速度练习或者日常训练寻找一双轻便、平衡性好的跑鞋，那么性能训练跑鞋就是你的选择。
Then, adjust the first section's runner size in each branch to make flow balanced in all branches.
再调整各支流道前段之尺寸，使各支流道可平衡充填。
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