浓度测定

The effect of six chemical disinfectants of different quality concentrations, namely, povidone iodine、dibromohydantoin、formalin、trichloroisocyanuric acid、calcium hypochlorine and sodium hypochlorite, on the species and quantities of plankton in cultured water were studied.

采用不同质量浓度的聚维酮碘、二溴海因、福尔马林、富氯、漂粉精和次氯酸钠等6种化学消毒剂，对蓄水沉淀池养殖海水进行消毒处理，处理前后分别测定浮游生物种类和数量变化。

The working conditions of equipments, the mediums and their concentrations, and the interference of coexisting ions were investigated. The results showed that when the flame was shielded with oxygen enriched, the barium in lapis lazuli could be determined using calcium nitrate as releasing agent in 5% nitric acid. The obtained results were satisfied.

对仪器的工作条件、介质及其浓度、共存离子的干扰进行了探索，结果表明，在富氧屏蔽火焰条件下、体积分数为5%硝酸介质中，以硝酸钙作释放剂，测定天青石中的钡，可获得满意结果。

METHODS: The calvarium bone of new born rats was digested with bacterial collagenase and cultured to obtain osteoblasts and SP with different concentrations was then added.

采用新生大鼠颅盖骨消化法培养成骨细胞，再加入不同浓度的SP，观察细胞生长数量，测定碱性磷酸酶活性及观察细胞周期变化。

METHODS: The calvarium bone of newborn rats was digested with bacterial collagenase and cultured to obtain osteoblasts and SP with different concentrations was then added. The proliferation and activity changes of the osteoblasts were identified by counting the cells, determining the ALP activity and observing the changes of cell cycle.

采用新生大鼠颅盖骨消化法培养成骨细胞，再加入不同浓度的SP，观察细胞生长数量，测定碱性磷酸酶活性及观察细胞周期变化。

METHODS: calvarium bone of newborn rats was digested with bacterial collagenase and cultured to obtain osteoblasts and SP with different concentrations was then added. The proliferation and activity changes of the osteoblasts were identified by counting the cells, determining the ALP activity and observing the changes of cell cycle.

采用新生大鼠颅盖骨消化法培养成骨细胞，再加入不同浓度的SP，观察细胞生长数量，测定碱性磷酸酶活性及观察细胞周期变化。

The calvarium bone of newborn rats was digested with bacterial collagenase and cultured to obtain osteoblasts and SP with different concentrations was then added. The proliferation and activity changes of the osteoblasts were identified by counting the cells, determining the ALP activity and observing the changes of cell cycle.

采用新生大鼠颅盖骨消化法培养成骨细胞，再加入不同浓度的SP，观察细胞生长数量，测定碱性磷酸酶活性及观察细胞周期变化。

The measurement of carboxyl end group content in PBT was discussed with an automatic potentiometric titrator.

采用全自动电位滴定仪测定PBT切片的端羧基含量，对称样量、溶剂的配比、滴定剂的浓度等进行了正交优化。

Before and after treatment, the left ventricular ejection fraction was measured by ultrasonic cardiography.

治疗前后分别行动态心电图检查，测量左室射血分数，测定血清钾浓度。

Objective: To establish a spectrofluorometry for determination of levofloxacin concentration in human cerebrospinal fluid.

目的：建立荧光分光光度法测定人脑脊液中左氧氟沙星浓度的新方法。

The effects of the surfactants on bioleaching of chalcopyrite were evaluated by measuring the leaching rate of copper and the density of bacteria cells in solution.

通过对浸矿溶液中铜的浸出率以及细菌浓度的测定来评价表面活性剂对氧化亚铁嗜酸硫杆菌浸出效果的影响。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！