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The volumetric flask is then filled with a stock solution consisting of 0.010 M HNO3 and

其配制方法是把适量的固体抗坏血酸加到一个250-mL的容量瓶中。

Transfer the solution into a 250 cm 3 volumetric flask.

把溶液放入一个250 cm 3的容量瓶里。

Solution B: NaNO3 is added to a 50-mL volumetric flask in the amount necessary to obtain a concentration of 0.02 M.

溶液B：将所需量的NaNO3加到一个50-mL的容量瓶中，以获得一个浓度为0.02M的溶液

If solution is clear, add 20 mL of distilled water to the cool digestion mixture and transfer to a 100mL volumetric flask and make up to volume.

如果溶液是澄清的，向冷却的消解产物中加20ml蒸馏水，并转移至100ml的容量瓶中定容。

Place the funnel with the filter paper and the precipitate in the neck of a 50mL volumetric flask.

将置有滤纸和沉淀物的漏斗置于50ml容量瓶瓶颈处，使用EDTA饱和的20％的氢氧化钠溶液清洗，然后使用蒸馏水清洗并定容。

Standard Preparation Transfer about 25 mg of sucralose Standard for analytical use, accurately weighed, into a 25-ml volumetric flask.

为准确变为一个25-ml体积的瓶称分析的使用的重量sucralose标准的标准准备转移大约25 mg。

Because the water for treating sample three times had some loss, and it can not be completely collected in volumetric flask. Therefore, we diluted the extraction to the scale for acertaining the sampling volume to analysis the content of XXX.

需要翻译的部分：由于三次处理试样的水有少许损失，l并不能完全收集到容量瓶里面，为了确定采样量，我们将提取液稀释到刻度，以便分析XXX的含量。

The improved method selects the absorbing wavelength of 618 nm and the reaction time of 40 min, uses the NH4Cl-NH3 buffer solution (pH=8.0) and BTB alcohol solution (0.4 g/L) respectively of 5 ml and 1.5 ml in the 50 ml volumetric flask, and can test the concentration of imidazolinyl-quaternary-ammonium-salts in range of 0 mg/L to 80 mg/L.

利用改进的显色反应法检测时，吸收波长选择618 nm，显色时间40 min， 5 ml容量瓶中NH4Cl-NH：缓冲液(pH=8.0)和BTB乙醇溶液(0.4 g/L)的添加量分别为 5 ml、15 ml，适用检测的咪唑啉季铵盐浓度为0~80 mg/L。

Four pairs will each prepare one of the following four solutions made by adding the appropriate quantity of solid NaNO3 to the specified volumetric flask and diluting to the mark with stock solution A.

四对人中每一对都要将适当量的固体NaNO3加到指定的容量瓶中，然后稀释至跟储备溶液A相同的刻度以配制以下四个溶液中的一个。

When other fermentation condition was constant, the total acidity in medium increased when the volumetric ratio of medium to flask and corn steep liquid concentration were increased.

发现在发酵其它条件恒定，装液比和玉米浆浓度增加时，发酵液总酸是递增的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。