GDP refers to the total values of all the ultimate products for a certain period of time of all the permanent units of a country.
GDP是指一国所有常住单位在一定时期内生产的全部最终产品的价值总和。
This might happen when it is desirable to centralize the enterprise models but necessary to maintain permanent variance in one or more divisions, business units or regions.
当需要集中企业模型而不需要维护一个或者多个部门、商业单位或者地区之间永久性的差异性时，这种情况就会出现。
Described are the welding technology and its technology evaluation inspection result of the semi-permanent couplers on multiple units.
介绍了动车组半永久车钩的焊接工艺及其工艺评定检测结果。
These units feature a single stage oil flooded rotary screw for increased productivity at reduced operating costs, and they're skid mounted for permanent installations.
这些组件配有单级旋转螺杆有助于降低运营成本，提高生产率，这些产品为滑动底板安装。
These units feature a single stage oil flooded rotary screw for increased productivity at reduced operating costs, and they're skid mounted for permanent installations.
这些组件配有单级旋转螺杆有助于降低运营成本，提高生产率，这些产品为滑动底板安装。
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