Production quotas, budget constraints, etc. might restrict the variation of the variables.生产定额, 预算约束等等可以限制变量的变化范围.Racial quotas and protectionism are scaring away some foreign investors.种族配额和保护主义吓跑了一些外国投资者。Quotas of the ...
Wallcoverings and floors should be able to withstand steam and splashes.墙面材料和地板都应该能耐热汽且防水。Wall and Decor, Wallpapers and Wallcoverings, Wallcoverings Made From Other Material, Vinyl Wallcoverings, Fibre Solutions Wallpap...