sarn英'sɑːn美'sɑːnBNC¹⁷³⁹⁹⁵⁺² 基本例句 石路面¹⁰⁰ Effect of the film mulch on the amount of absorption nitrogen, special absorption rate of nitrogen SARN and special absorption rate of phosphorus SARP was significant. 覆膜对春小麦吸氮量、特殊吸氮率 SARN、特殊吸磷率 SARP的影响是显著的。 cnki