The Fars news agency quoted a senior provincial official, Sirous Saberi, as saying the aeroplane had technical problems and tried to do an emergency landing.
That the performance on the footplate is bad, bad technique for landing and that behindhand flight part are all technical problems.
技术上的问题表现为踏板准确性不高、落地技术较差以及腾空技术落后。
3
The isothermal forging process is introduced in the paper which is to meet the technical requirements of the landing gear cylinder, and how to control the process parameters is also introduced.