The arrangement of the ribs has important effects on the rigidity of molded plastic part too.

加强筋的布置对注塑件的刚度也有重要影响。

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The key was a plastic "ribcage," a complex molded plastic part that pushed the limits of injection-molding tooling technology.

其中的关键是一种塑料特征“筋墙”，这是一种比较复杂的注塑塑料零件，达到注塑技术的极限。

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