采用一种新工艺制作了垂直腔面发射激光器(VCSEL)，即用开环分布孔取代以往的环形沟道作为氧化物限制技术的注入窗口。
A new process method, using open annulus distributed holes in place of ring trench as the lateral oxidation Windows, is reported to fabricate vertical-cavity surface emitting laser (VCSEL).
只是存在两个问题：它的储能比钴氧化物要低，而且导电率也较低，这限制了电池释放和存储能量的速度。
There were just two problems: it had a lower energy-density than cobalt oxide and suffered from low conductivity, limiting the rate at which energy could be delivered and stored by the battery.
与此同时，中国正准备推出一套新的排放测试标准，更严格地限制氮氧化物等尾气的排放——氮氧化物等尾气会引发呼吸系统的疾病。
Meanwhile, China is preparing to introduce a new set of emissions testing standards, with tougher limits on exhaust gases such as nitrogen oxides, which cause respiratory diseases.
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