Secondary roots emerge on the 4th or 5th day about 4 or 5 cm from the root apex . 在第四或第五天,距根端大約4或5厘米處發(fā)出次生根。
Root apex beyond crossing point 根錐頂至相錯(cuò)點(diǎn)的距離
Root apex to back 根錐頂至安裝基準(zhǔn)面距離
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