We used all open source components: OS Commerce, Sugar CRM to manage the BOM and track usage and payments.

我们全部使用开源组件：OS Commerce, Sugar CRM管理BOM并跟踪使用和付费。

youdao

The porosity of porous Al-Si alloy is 40~80% and percentage of open-cell is above 85%, bom of which vary with the fabrication process of preform.

孔隙率在40～80%，孔隙连通率在85%以上，孔隙的大小和孔隙率取决于预制块的制备工艺。

youdao