传统化学气相沉积(CVD)工艺制备周期长，而且成本高。
The conventional preparing method -chemical vapor deposition (CVD) need a long period and expensive cost.
在这种环境中，维持传统的分布式企业桌面战略很困难、不安全而且成本高。
Trying to maintain a traditional distributed enterprise desktop strategy in this environment can be difficult, insecure, and costly.
这一切必定花费高昂，但张女士坚持认为，规模愈大，效率愈高，而且每单位产量的成本也愈低。
All this is inevitably expensive, but Mrs Cheung insists that greater scale creates greater efficiency and reduces the cost per unit of output.
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