"You want it very rigid and stiff, but from an electrical point of view you also want it to allow ions to flow through the material," says Dr Greenhalgh.
“材料要坚韧稳定，但从通电的角度看也需要让电离子顺利通过，”格林浩尔博士说。
We could easily see free access for mass-market content funded from advertising alongside the equivalent of subscription and pay-for-view for material with a niche readership.
我们可以容易地看到对依靠广告资助的大众市场的内容的免费访问模式，同时还有针对小众读者群资料的等同于订阅和付费阅读的模式。
Folk are being nudged away from viewing original material at the archive, free of charge and advised by specialists, toward its pay-per-view website.
档案馆正劝走那些想要免费在档案馆阅览原始材料的读者，专家也建议他们去付费浏阅的网站查找。
应用推荐