The efficiency of fruiting yield of pear with inter-rootstock S2, S5, PDR54 was 1.23, 1.24, 1.48 times that of arbor-rootstock pear ,respectively.是什么意思_The efficiency of fruiting yield of pear with inter-rootstock S2, S5, PDR54 was 1.23, 1.24, 1.48 times that of arbor-rootstock pear ,respectively.在线翻译_英语_读音_用法_例句