The sequence of excavation for the shaft of diversion system at Pushihe storage power station is to excavate the pioneerwell used by back well boring machine, then by hand air drill to expand it.
蒲石河抽水蓄能电站引水系统中的竖井开挖，拟采用反井钻机进行导井开挖，人工手风钻钻孔扩挖的方式施工。
2
Voyager 2 and Pioneer 11, both also well beyond the orbit of Pluto, are 14.2 billion and 12.4 billion kilometers from the Sun respectively.
航行者2号和先驱者11号也都超越了冥王星轨道，分别离太阳有142亿和124亿千米。
3
GetJar has been in the business of offering apps to consumers since 2005, well before Apple, and helped to pioneer the model that the general public understands as an app store today.