放射性活性用贝可/Bq。频率用兆赫/MHz、千赫/kHz、赫兹/Hz。照射量用库仑每千克/(C · kg -1)。B 的浓度或 B 的物质的量浓度用摩(尔)每升/(mol · L -1)。B 的质量浓度用千克每升/(kg · L -1)、克每升/(g · L -1)、毫克每升/(mg · L -1)、微克每升/(μg · L -1)、纳克每升/(ng · L -1)。B 的质量分数(定义:B 的质量与混合物的质量之比)无量纲(可写成小数或百分数)。
B 的体积分数无量纲(可以写成小数或百分数)。ppm 并非单位符号,不能使用,应根据物质 B 与混合物的不同关系分别改写成质量分数、体积分数或质量浓度,在数值不变的情况下可改写成 μL · L -1 或 mg · kg -1。组合单位中不能附加其他信息,例如“光合速率(CO2)为 27.5 ~ 31.3 μmol · m-2 · s -1”,不能写成“光合速率为 27.5 ~ 31.3 μmol CO2 · m-2 · s -1”。
Hameed M A,Reid J B,Rowe R N. 1987. Root confinement and its effects on the water relations,growth and assimilate partitioning of tomato(Lycopersicon esculentum Mill.). Annals of Botany,59:685–692.
Kennedy W J,Garrison
R E. 1975a. Morphology and genesis of nodular chalks and hardgrounds in
the upper cretaceous of Southern England. Sedimentology,22:311–386.
Kennedy W J,Garrison R E. 1975b. Morphology and genesis of nodular phosphates in the cenomanian of Southeast England. Lethaia,8:339–360.
Xu Chang-jie,Zhang
Shang-long. 2002. Advances in research of genes responsible for
carotenoid biosynthesis in citrus. Acta Horticulturae Sinica,29 (Supplement):619–623. (in Chinese)
Zhou Bao-li,Lin Gui-rong,Fu Ya-wen. 1998. Effect of graftage in increasing yield and controlling disease and its relationship with PPO,SOD,and EST isozymes in egglant∥Hou Xi-lin,Chang You-hong. Advances in horticulture(Ⅱ). Nanjing:Southeast University Press:425–428. (in Chinese)