The niche of P. tabulaeformis and Q. liaotungensis had great overlapped.They formed strong the intraspecific and interspecific competition. 油松和遼東櫟各自生態(tài)位有較大重疊，形成強烈的各自種內競爭和彼此種間競爭。
Increased competition is giving consumers greater choice of networks and operators,and services develop in response to the market. 業(yè)內競爭日趨激烈，令消費者在電訊網(wǎng)絡(luò )及營(yíng)辦商方面有更多的選擇，而服務(wù)發(fā)展會(huì )因應市場(chǎng)的需要。
