The contents of elements K, Na, ca, Mg in carbon fibre were determined by atomic absorption spectrophotometry.

碳纤维中的钾、钠、钙、镁元素的含量可用原子吸收分光光度法来测定。

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Micro plot trial was carried out to study the effect of K application on dry matter accumulation and the content and the absorption of K, ca and Mg of oil rape.

采用池栽土培试验研究了钾对不同生育期油菜干物质积累量和钾、钙、镁含量及吸收量的影响。

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Ca absorption and tipburn of lettuce were studied under different application of n, k, ca, sprinkler irrigation and border irrigation in open field.

在露地栽培条件下，研究了不同氮、钾、钙水平处理以及喷灌、畦灌对生菜钙吸收和干烧心的影响。

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According to workers, there was a fight between workers and quality control inspectors in area K that led to the damage in inspection room CA, the injury of some people, and the hospitalization of others.

FORBES: Foxconn Quality Control Workers Strike Over iPhone 5 Workload, Production Lines "Paralyzed"