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The protein and the fatty compounds in the sample are precipitated by zinc acetate and potassium ferrocyanide, then the chromogenic reaction of acetylacetone with formaldehyde released from the sample in weak-acid medium and boiling bath takes place immediately.

提出了一种用於现场测定水发食品中甲醛含量的样品快速前处理新方法，采用乙酸锌和亚铁氰化钾沉淀样品中的蛋白质和脂肪，在弱酸性介质和沸水浴条件下提取了样品中的甲醛，并与乙酰丙酮立即发生显色反应。

Methods: The protein and other impurity in the sample were precipitated by zinc acetate and potassium ferrocyanide after dipping of the sample. N,N-dichlorocyclohexylamine derived from sodium cyclamate by sodium hypochlorite in the filtrate was extracted by hexane. The HPLC separation was carried out with a phenomenex Gemini-C18 column using acetonitrile-water(7+3) or methanol-water (8+2) as mobile phase and detected by UV monitor at 314 nm. External standard method was used for quantification.

样品中甜蜜素浸提后，用乙酸锌和亚铁氰化钾试剂沉淀蛋白质等干扰杂质，过滤，用次氯酸钠将样品溶液中的甜蜜素转化为N，N-二氯环己胺经正己烷萃取后，在phenomenex Gemini-C18柱上，以乙腈－水(7+3)或甲醇－水(8+2)为流动相进行分离，HPLC-UV检测器在314 nm测定，外标法定量。

The relation between crystalline RE Carbonates precipitated from various types of leaching liquor of weathered leach-deposited RE ore and its RE composition has been studied by chemical analysis, XRD,IR spectrograph,SEM,TGA and DTA, The results are as follows: The quality of crystalline RE carbonates is better than one of RE oxalates.

用质量分析、X射线衍射图谱、红外光谱、电镜照片及差热分析等分析手段，研究了从不同类型风化壳淋积型稀土矿中得到的晶型碳酸稀土与稀土配分的关系。

Inside the droplet, precipitated protein or salt, or even protein crystal may be visible.

这样在小水滴中析出的蛋白质或盐，甚至蛋白质结晶都可以被看到。

Tens of flags representing the Southern states waved in the gentle wind precipitated with gun powers.

数十面代表着南方各州的军旗在硝烟弥漫的微风中飘动。

In Fe-2.1% Cu alloys, copper-enriched phases precipitated at grain boundaries after water-quenched at 1600℃ and 1 000℃, and ε-Cu phases were found inside grains after water-quenched at 800℃.

Fe-2.1% Cu合金在1600℃和1000℃下淬火，含铜相都沿晶界析出；而800℃淬火ε-Cu相在晶内析出。

The head-up tilt table testing is performed using a specially designed tilting table in which, when the patient is tilted from supine to upright positions, asoagal syncope is precipitated in predisposed patients.

头向上倾斜试验在特殊设计的倾斜床上进行，患者由仰卧位向直立位过渡，此时对于易感病人血管迷走性晕厥。

Europe is now struggling with a crisis precipitated by Greece's failure to stick to control deficit.

因希腊在控制赤字方面的失败，欧洲现在正和其积淀下来的一场危机作斗争。

Ni 2+ and Co 2+ can be precipitated with Bi 3+ in sulfide when Bi 3+ and sodium sulphide is added to water sample.

在中性或弱碱性条件下，向被测水样中加入适量Bi3＋和Na2S，使水样中的Ni2＋、Co2＋和Bi3＋以硫化物的形式沉淀下来。

Under the experimental conditions, alum, alum/sodium silicate, sodium silicate/hydrochloric acid, zinc chloride, and sodium silicate/zinc chloride are effective to inhibit the dissolution of precipitated calcium carbonate in distilled water with pH value 5.85, and the pH values of the suspensions decrease.

硫酸铝、氯化锌、硅酸钠/稀盐酸可对PCC在pH值为5.95的醋酸/醋酸钠缓冲溶液中的溶解性产生较弱的抑制作用，硅酸钠/氯化锌的溶解抑制作用相对较为显著，滤液钙离子浓度可降低30％左右。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。