铅的

RoHS Directive stipulates that from July 1, 2006, All member states should invest in the market to ensure that the restrictions on the use of electronic and electrical equipment, lead, mercury, cadmium, hexavalent chromium, polybrominated diphenyl ether and polybrominated biphenyls and other hazardous substances.

RoHS 指令规定，从2006年7月1日起，各成员国应确保在投放于市场的电子和电气设备中限制使用铅、汞、镉、六价铬、多溴二苯醚和多溴联苯等有害物质。

These directives limit the use of six hazardous materials in the manufacture of electronic and electrical equipment: lead, mercury, cadmium, hexavalent chromium (chromium VI or Cr6+), polybrominated biphenyls, and polybrominated diphenyl ether.

这些标准限制了6种有毒材料在电子电气设备生产中的应用：铅，汞，镉，六价铬(chromium VI 或 Cr6+)，多溴联苯，多溴联苯醚等。

Is a professional production of large-scale explosion-proof heaters, high temperature heat pipetemperature Electrical, mechanical and electrical cellular heat pipe dehumidification drying, central air-conditioning fan coil heater, heating tube electric reflow wave soldering wire,, shoe-making mechanical and electrical heat pipe, mold heating pipes, electric cigarette tube equipment, pharmaceutical machinery electric pipe, electroplating equipment, heating tube, heater Teflon, titanium heating tube, far infrared heating tube, quartz heating tube, ceramic tube heater, titanium system without Pb furnace, electric lap Limited, and Deputy States imports and compensation of thermocouple wire.

深圳市新宏大电热科技有限公司是一家专业生产大型防爆加热器、高温型模温机电热管、蜂巢式除湿干燥机电热管、中央空调风机盘管加热器、波峰焊回流焊电热管电热丝、、制鞋机电热管、模具加热管、卷烟设备电热管，制药机械电热管、电镀设备加热管、铁弗龙加热器、钛加热管、远红外电热管、石英电热管、陶瓷电热管、钛制无铅锡炉、电热圈的有限公司，并代理各国进口热电偶及补偿导线。

Methods Atomic absorption spectrometry was applied to determine the lead content in the air and dust in the main trunk roads around the primary schools in that region.

采用原子吸收分光光度法，对该区小学内及周围交通干道空气和尘土中的铅含量进行测定。

Laboratory incubation experiments were conducted to evaluate the toxicity of cadmium, lead, and zinc in the forms of acetates and chlorides to microbial biomass carbon, biomass nitrogen, and biomass phosphorus in a red soil.

用实验室培养法研究了不同镉、铅和锌化合物对红壤中微生物生物量碳、氮和磷的影响。

D Find the asymptotes.

找出函数的水平、铅直渐近线以及其它变化趋势

Bullets will be plucked from biathlon targets and recycled to keep the lead from poisoning ground water. and these tricks wont be forgotten.

两项竞赛靶子上的子弹会被取出回收，以避免铅污染地表水，这些方面都不会被遗忘。

"00" Buckshot consists of lead pellets that are much larger, and thus more lethal, than the birdshot that is occasionally used for crowd control .

&00&鹿弹是由更大的铅弹，从而更具杀伤力，比偶尔是控制人群使用birdshot。

EC 26. Lead oxide in the glass envelope of BlackLight Blue lamps.

EC 蓝黑灯管玻璃外罩所含的氧化铅

During the soldering of lead-free solders, blowholes and pad lifting problems will often occur, by applying cooling systems at 10℃, can solve the above problems.

无铅焊锡在焊接时容易产生空泡及焊盘剥离等问题，在出口处使用可达10℃的冷气系统，可明显改变上述问题。

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％。