单词	layer ploughing
释义	layer ploughing 分层耕作
随便看	Central Ra. central radio laboratory central radio office central radio propagation labo ratory central random variable central rate central rate against ecu central ray central rays central reactivity coefficient central reactor flux central readjustment central receiver central reciprocal lattice central rectrice central rectrices central reducer unit central reference control unit central referencing environment table central reflector central reflex time central refrigerating central refrigerating plant central refrigerating system central refrigeration plant zxhd zxhj zxhs zxjr zxjy zxkh zxlj zxlq zxmd zxms 芳辰芳邻芳醇芳香芳香族化合物芳香月季芳香氨醑芳香油芳馥芳馨