One article is a ruler, another is a pen and the third is a rubber.
一样东西是尺子，另一样是钢笔，第三样是橡皮。
The article is outline introduction of rubber dam key project design.
文章对橡胶坝工程设计进行了概要介绍。
The gate seal using environmental protection article silicone rubber.
大门密封采用环保硅橡胶条。
The gate seal using environmental protection article silicone rubber.
大门密封采用环保硅橡胶条。
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