... 闭项 closed term 对乘积闭合closed under product 对集合闭包闭合 closed under set closure ...
双语例句
1
This product is fully closed structure and can work in every moist (it still can normal working under water 1.5 meter), dust and corrosiveness environment.
整体式全封闭结构，确保在各种潮湿(可在水下1.5米处正常工作)、粉尘及腐蚀性环境中工作。
2
Secondly, under the certain assumption, the closed form solution of the product is obtained.
其次在一定假设下，对产品进行定价，获得定价闭合解；
3
This research on closed-loop supply-chain under the final product price fluctuations with robust optimization is divided into three parts.