If the parting line cannot be on a single plane, then it is good practice to use symmetry of the design to minimize the sidethrust forces.
如果分模面不能在单一平面，利用设计的对称性来减小侧向推力不失为一种好方法。
2
And they caught every one his fellow by the head, and thrust his sword in his fellow's side; so they fell down together: wherefore that place was called Helkathhazzurim, which is in Gibeon.
彼此揪头，用刀刺肋，一同仆倒。所以，那地叫作希利甲哈素林，就在基遍。
3
Speaking ahead of the game, Wenger has no doubt that Ramsey is mentally ready after his invaluable loan spell at Nottingham Forest, where he was thrust back into the physical side of the game.