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Under 300 W medium mercury lamp, the quantum yields of petroleum hydrocarbons at 365 nm were determined by potassium ferri-oxalate actinometer. And their reaction kinetics constants were measured too.

并采用高光密度法,以K3Fe(C2O4)3做光露计,300W中压汞灯为光源,在365nm波长处测定石油烃类的反应速率常数和量子产率。

After roller compaction,the wet density of RCC would be measured by sampling from the digged pit or by nuclear densimeter.

碾压后,挖坑取样或采用核子密度水分计选点测量碾压混凝土的湿密度。

The spatial distribution of the flux density is investigated by the CCD method and calibrated by heat flow meter.

采用CCD法得到了能流密度的相对分布并用热流计标定出能流密度分布。

The Sonometer includes two bridges and ten wires, two each of the following diameters and linear density

振动频率计包括两个桥臂和十根金属丝,每两根具有如下的直径和线密度

In the paper, more than 1500 data points about the densities and viscosities and capacities for five binary systems related TPA at atmospheric pressure were measured using the pycnometer, Ubbelohde viscometer and the differential scanning calorimeter.

首先利用比重瓶、乌氏粘度计和差示扫描热量计测定了对二甲苯和醋酸、醋酸和水等五个二元体系在常压下的1500多个数据点的密度、粘度、比热数据。

Four-wavelength reflectometry can be used in human infants to estimate MP density.

使用4-波长反射计测量婴儿的黄斑色素密度值。

Compared with alcoholmeter method, its measurement results were more accurate. The alcohol content measurement results by chemical oxidation and by international density flask method were the same.

在这两个方法中,密度瓶法作为经典的分析方法,结果准确,但是,20℃的恒温条件不易控制,这就势必造成一定的分析误差;而酒精计法虽然具有操作简便快速,但由于酒精计精度较差和人为因素,导致误差较大。

The density and viscosity were measured by a vibrating densimeter(model DA-505U) and a Ubbelohde suspended-level viscometer at atmospheric pressure for ethyl crotonate + ethanol,crotonic acid + ethanol.

在常压下利用DA-505U型振动管密度仪、乌氏毛细管粘度计测定了巴豆酸乙酯-乙醇、巴豆酸-乙醇两个体系的密度和粘度。

The white low-density powder of the the sodium salt of polyaspartic acid was got by dropping the hydrolyzable solution to wiscked high speedly carbinol which Consumption amount is about 3-6 times to the amount of solution, the powders density is about 0.35g/ml.4 Polyaspartic acid was characterized by NMR and IR.5 The scale inhibition behavior of polyaspartic acid was studied and result shows: The calcium carbonate inhibition rate is up to 99% at the dosages of 12.5mg/ Land when pH value is 9.0, Ca2+ concentration is 120mg/L and HCO3- concentration is 366mg/L.6 The primary design was put forward for industrialized production of PASP.

在此工艺下得到聚天冬氨酸钠粉术,外观为白色的轻质粉术,堆积密度0.35g/ml,不用进行脱色和粉碎。 4。用红外光谱和核磁共振谱图对聚天冬氨酸进行了表征。 5。对合成的聚天冬氨酸钠对CaCO_3的阻垢性能进行了研究。结果表明:在Ca~(2+)离子浓度120mg/L(以碳酸钙计300mg/L),HCO_3~-离子浓度为366mg/L(以碳酸钙计600mgL),PH值=9.0的条件下,阻垢剂浓度达到12.5mg/L时阻垢率可达99%。

The hypothesis on the equivalence in non conservative system is set up for irreversible process on the basis of bring\|in of the nonconservative noninertial system;and the hypothesis on the covariance in non conservative system is put forth for the space time with complex action on the basis of bring\|in of the ultra gauge.

在引入非保守非惯性系的基础上对不可逆过程建立非保守系等效性假设,在引入广域度规的基础上对具有复杂行为的时空建立非保守系协变性假设;利用密度分布的不均匀度h和粗粒熵S及推导的多标度因数η计算式,引入非保守惯性质量和非保守引力质量。

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In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国,慢性酒精中毒,肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题,你可以随时联系我。

Very pretty, but the airport looks more fascinating The other party wisecracked.

很漂亮,不过停机坪更迷人。那人俏皮地答道。