沉痕：在注塑成型过程中，由于局部收缩或不均匀收缩而形成的凹陷或坑洼。
缩影
... Shrinkage/shrink收缩 Sink marks缩影 Short shot/short molding打不满 ...
缩水痕(Sink MarkS) 成因 : 注塑件出现缩水痕的不良现像，成因有多方面 ，例如:不洽当选择塑料特性、不良塑件设计、和较差的注塑条件等都会导致有缩...
凹陷(sink marks), 此释义来源于网络辞典。
... Shrinkage/shrink 收缩/收缩率 Sink marks 凹陷、缩水 Short shot/short molding 打不满、欠注 ...
缩影；凹陷；缩水；缩水痕
Also packing of thick sections can produce sink marks on the part surface.
包装也会产生厚壁凹痕对部分表面。
The thin ribs applied in the back reinforcing structure can not only effectively improve the intensity of the weak beam, but also avoid sink marks on the front side of the beam.
本实用新型的背部加强结构薄筋既可以使弱梁的强度有效的增加，又可以避免弱梁的正面不出现缩痕。
Those marks began to flow, sink, change, disappear — tiny and common things had fallen into the turmoil before we approached the truth.
它们开始流转、下沉、变化、掠过、消失——微小普通在我们感到即将接近真理时陷入了大动荡。
And though I now sink out of view and shall be forgotten, I believe I have made some marks which will tell for the cause of civil liberty long after I have gone."
VOA : special.2009.06.11