To make crushed ice, put some ice cubes into a strong polythene bag, seal it tightly, then hit it with a rolling pin to break up the ice.
制碎冰时，放一些冰块在结实的聚乙烯袋，封紧袋口，用擀杖敲击打碎即可。
Provide pin to avoid sealing at midway and protect seal part of packer, enhanced reliability of plugging string.
设计有防中途坐封的销钉，保护封隔器的密封件，提高了封堵管柱的可靠性。
Provide pin to avoid sealing at midway and protect seal part of packer, enhanced reliability of plugging string.
设计有防中途坐封的销钉，保护封隔器的密封件，提高了封堵管柱的可靠性。
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