sand-packing model 填砂模型
Quartz sand packing 石英砂包装
sand packing process 砂粒充填
formation sand packing 地层充填防砂
sand packing technology 防砂工艺技术
sand pump packing 砂泵盘根
packing sand 填砂
gravel packing sand 砾石充填砂
packing sand control 充填防砂
A little boy is on his knees scooping and packing the sand with plastic shovels into a bright blue bucket.
一个小男孩跪在地上，用塑料铲把沙装进一个浅蓝色的桶里。
A little boy is on his knees scooping and packing the sand with plastic shovels into a bright blue bucket.
男孩跪在那儿用塑料铲挖沙子，并把沙子装在一个鲜艳的蓝桶里。
This product is adopted and passed the silkworm sand with refined special craft as the packing material.
本品采用经过特殊工艺精制的蚕砂作为填充物。
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