As lead and arsenic pollution element are skew distribution, statistics of a natural background value and a content of lead and arsenic are worked out using median method of skew distribution.
由手铅、砷污染元素呈偏态分布，故采用偏态分布中的中位数法作了铅、砷自然背景值及含量的统计。
In this paper calculating method of lead angle of helical gear by measuring span length of length bar and base tangent length is put forward and lead angle calculating formula is deducel.
分析齿轮主要参数，提出用测量跨棒（）和公法线长度计算斜齿圆柱齿轮螺旋角的测绘方法，并推导出螺旋角的计算公式。
Based on the rigid plastic constitutive equation of lead, the damping force model of lead extrusion damper was deduced from the even plastic deformation energy method.
本文根据铅的刚塑性本构关系，利用均匀塑性变形能法，推导了铅挤压阻尼器的阻尼力滞回模型。
To lead anode plate thickness uniformity, we proposed the dynamic lost heavy method realization lead anode plate casting method. It increased the precision of casting the lead anode plate.
为使铅阳极板厚薄均匀，提出了动态失重法实现铅阳极板定量浇铸的方法，提高了铅阳极板的浇铸精度。
The gold content above 10-9 in lead metal and lead oxide can be accurately determined by this method.
测定方法可准确测定金属铅及氧化铅样品中10 ~(- 9)级的金。
The method of parallel motion of response curve for lead ion-selective electrode in lead buffers is given to determine the stability constant of Pb-NTA complex in ethanol-water solvent.
本文提出了金属缓冲溶液中离子选择电极响应曲线平移法测定配合物的稳定常数。
This paper describes the method to increase the lead on a specific lathe and the measures to improve the lead design accuracy.
本文叙述如何在某一特定的车床上加大导程的方法及提高导枉设计精度的措施。
"Double spike" isotopic dating method of lead isotope is one of the dating ways of lead isotope, its aim is to correct mass differentiation effect and enhance the precision of measure.
铅同位素“双稀释剂”同位素定年法是当前应用较广的一种铅同位素定年方法。双同位素稀释法的目的在于校正质量鉴别效应，提高测定精度。
The main source of lead pollution and the preventive method of child lead poisoning were discussed.
讨论了铅污染的主要来源，并进行了儿童铅中毒的预防对策研究。
To solve this problem, three methods are proposed, namely, the input lead method, input filtering method and input lead filtering method. Some satisfactory results are obtained in experiments.
针对这一问题，文中提出了三种解决办法，即给定超前法、给定滤波法和给定超前滤波法，并在实验中取得了满意的效果。
Based on the analysis of lead-time in supply chain, the paper presents a calculating method for dynamic lead-time of homemade parts so as to improve the operation.
在对供应链提前期分析的基础上，提出了一种自制件动态提前期的计算方法作为对供应链固定提前期的补充，以提高供应链系统的运行效果。
It introduces the method to measure the length of black lead in gray cast iron by digital graphics technology. The strip black lead can be classified.
介绍了一种利用数字图像处理技术进行灰铁金相石墨测长的方法，用于检测灰口铸铁金相中的条状石墨长度，并对其进行分级。
Lead Zirconate Titanate ceramic material has been prepared by sol-gel method with Titanium butoxide, Zirconium alkoxide and anhydrous lead acetate.
以丁醇钛、乙醇锆、醋酸铅为原料，采用溶胶-凝胶新工艺，成功地制备出锆钛酸铅陶瓷材料。
The treatment of waste gas with lead from the molten-lead pat has been a difficult problem. A Practical and economic treatment method is introduced in this paper.
熔铅锅产生的含铅废气的治理一直是没有得到解决的难题．本文介绍了一种切实可行、经济有效的治理措施。
This paper introduces the general situation of Waste Copper polluted by lead and the current domestic method for clearing out lead from Waste Copper by Fire-refining.
本文在介绍了杂铜含铅概况，以及目前国内除铅工艺现状。
Objective To dig out the potential information in two-lead ECG signals, and discuss a new method of analyzing and processing two-lead ECG signals, viz.
目的进一步挖掘出两导联心电信号中潜在的信息，探讨一种分析与处理两导联心电信号的新方法，即心电正交合成图法。
This article expatiates the lead-foot-line reciprocation method and its usages from the two sides of cathode lead-foot joint reciprocation and deflexion loop down-lead reciprocation.
从阴极引脚接点互换和偏转线圈引线互换两个方面对“引脚线互换法”及其用法进行了阐述。
This article reports the quantitation relationship of resting ECG parameters taken from 100 subjects by using the method of self-comparison with M-L modified 12-lead and conventional 12-lead systems.
本文应用M—L改良12导联体系与常规12导联体系的自身对比方法，检测和分析100名受检者的静息心电图各参数之间的数量关系。
The method is a clean lead-smelting method with mild conditions and good environment, and has important significance and application prospect on the improvement of lead smelting technology.
本发明是一种条件温和、环境良好的清洁炼铅方法，对铅冶炼技术进步具有重要意义和应用前景。
The invention relates to a method for producing a lead-calcium alloy. The method comprises the following steps: (1) melting lead;
本发明涉及一种铅钙合金的生产方法，所述方法包括以下步骤：（1）将铅熔化；
The invention relates to a method for producing a lead-calcium alloy. The method comprises the following steps: (1) melting lead;
本发明涉及一种铅钙合金的生产方法，所述方法包括以下步骤：（1）将铅熔化；
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