This paper introduces a method of turning a handy lead-door into electronic door with the application of several new techniques including two-step slowing down,chains transmission hanged railway and pulley orientation,it has remarkable advantages such as simplicity in structure ,convenience in operation,stability in application and low cost.
介绍了一种将手动操作的铅门研制成电动运行的方法。
The research area is about 2000 km2 including Guanmenshan Pb-Zn deposit and its surrounding areas.
研究区位于关门山铅锌矿床及外围约2000km~2范围内,依据综合信息成矿预测的基本理论,采用图像处理方法,进行遥感信息及地球物理信息对地质构造识别的增强处理。
The Re-Os isotopic age of molybdenite from Beichagoumen Ph-Zn deposit in the North China Platform;
冀北北岔沟门铅锌矿床中辉钼矿的铼-锇同位素年龄
The Research of Pb′s Various Forms in the Latosol by the Effect of Earthworm;
蚯蚓影响下铅在砖红壤中的形态变化研究
DETERMINATION OF TRACE Cu,Pb,Zn,Cd IN WATER BY FAAS;
火焰原子吸收分光光度法直接测定水中微量铜、铅、锌、镉
Effects of Different Potassium Fertilizers on the Phytoavailability of Pb in Soil and its Mechanisms;
不同钾肥对土壤铅植物有效性的影响及其机制
galena [lead sulphide]
方铅矿〔铅硫化物〕
There are some pencils in the pencil - box.
铅笔盒里有一些铅笔。
With my pencil, with my pencil,
用我的铅笔，用我的铅笔，
Lead and lead-antimony alloy wire
GB/T1474-1988铅及铅锑合金线
Lead and lead-antimony alloy tube
GB/T1472-1988铅及铅锑合金管
Lead and lead-antimony alloy plate
GB/T1470-1988铅及铅锑合金板
Occasionally red lead is added to the leady oxide.
有时将铅丹加到铅粉中。
lanthanumdoped lead zirconate-lead titanate
掺镧的锆酸铅－钛酸铅
Lead and lead-antimony alloy rod
GB/T1473-1988铅及铅锑合金棒
wood of a pencil cedar tree; used for making pencils.
铅笔柏木料，用于制铅笔。
Write with pencils, write with pencils.
用铅笔写字，用铅笔写字。
Leaded or unleaded?
含铅还是无铅汽油?
An act of putting the shot.
推铅球推铅球的动作
Type made of metal.
铅字用金属制作的铅字
To provide space between(lines of type) with leads.
塞铅条在铅字行的空隙间隔以铅条
Improvement of Analysis Way on the Content of Pb in the Raw Lead and Pb-Sb Alloys;
粗铅及铅锑合金中铅含量分析方法的改进
A research on lead and strontium co-deposition chelatometric titration in lead concentrate
铅精矿中铅的铅锶共沉淀络合滴定法研究
Determination of Urine Plumbum among Staff Members in a Plumbum Company.
某铅业公司接铅工人尿铅含量测定结果