查询词典 lead-free

Using this method, alignment between headstock and tailstock centers is not able to be adjusted, and is far from what would be considered "close tolerances." All leadscrews have 1/4-20 threads, with the cross slide and main lead screws being the appropriate left-hand lead, while the tailstock is a right-hand lead, so turning the handwheel always advances the slide away from the user.

使用这种方法，路线之间的 headstock和尾架中心，是无法加以调整，是远远没有到会被认为是&密切公差&的所有leadscrews有1/4-20线程，与两岸幻灯片和主要领导螺丝被适当的左莅带头作用，而尾架是一个右手边的铅，因此，把手始终进展幻灯片远离用户。

F In case of making use of evaporative cooling for copper ring down-lead and main lead-out line of stator coil, airproof test for both the lead-out line and connection tube is required.

f铜环引线和主引出线采用蒸发冷却方式时，引出线和连接管件的气密试验。

E In case of making use of evaporative cooling for copper ring down-lead and main lead-out line of stator coil, both the lead-out line and connection tube shall take hydraulic pressure and airproof test

e铜环引线和主引出线采用蒸发冷却方式时，引出线和连接管件均应进行水压和气密试验。

The; of down-lead of 200 A binary electric current that the design made intensity of central field magnetic induction be 3 T is opposite through the experiment of the thermal resistance of interior of the leakage heat of voltaic down-lead, heat exchanger and line of high temperature superconduction and cupreous matrix solder resistor undertook metrical, studied refrigeration engine trouble or the transient state temperature of down-lead of the electric current below power cut condition changes.

设计制作了中心场磁感应强度为3 T的200 A二元电流引线；通过实验对电流引线的漏热、换热器内部的热阻以及高温超导线和铜基体的焊接电阻进行了测量，并探究了制冷机故障或者停电状态下电流引线的瞬态温度变化。

Through screening and comprehensive analysis of childhood lead poisoning caused by automobile exhaust pollution is the main factor, as automobile exhaust lead dust accumulation in more than one meter above the ground, and that is exactly the children's activities with the breathing zone of pollution caused by it has become one of the major causes of childhood lead poisoning.

通过筛查和综合分析，造成儿童铅中毒的因素主要是汽车尾气污染，由于汽车尾气铅尘多积聚在地面以上1米的范围，这正好是儿童的活动与呼吸带，它所引起的污染已成为儿童铅中毒的主要原因之一。

Jinan Mingquan Writing Instrument Co.,Ltd is a professional corporation in producing pencils lead and pencils since it was built in 1989.Sticking to the principle of "existing by quality,developing by innovation",we are making concerted effort,so that the scope of the enterprise is becoming more broader.And now,it has three branchers: graphite lead plant,color lead plant,and pencil plant.

济南明泉笔业有限公司是专业制作铅笔芯及铅笔的生产型民营企业，自1989年建厂以来，全体员工本着&以质量求生存，以创新求发展&的企业宗旨，齐心协力，精益求精，不断地发展壮大；现已拥有三个分厂：石墨铅芯厂、彩色铅芯厂、铅笔厂。

Determination of silver in lead ore by AAS;2. The ore is lead mine of partial oxidation,the lead ore consists chiefly of galena and cerusite.

所处理矿石为半氧化铅矿石，矿石中铅以方铅矿和白铅矿形式产出，铅的氧化物主要为白铅矿，分布率达39%。

When the concentration of lead was very high, the most of lead linked weekly with the cell wall of root and was easy to dissolve into acidic solution. But about 50μg Pb/g cell wall was very hardly desorbed, it might be entered into the cell wall. This phenomena showed that the complete desorption of lead will be very difficult.

铅浓度高的细胞壁，其相当大部分的铅与细胞壁的结合力并不大，因此在用强酸处理时，就比较容易地溶解下来，但是大概有50微克／克细胞壁的铅，它们的结合牢度大，或者深入到了细胞壁的组织中，因此很难解吸下来，这将会对铅的彻底去除带来困难。

The main technological innovation is as follows: Adopting collector Bp was of high-effect to float copper; using no-toxic and combinatorial depressants to depress lead, the experiment was carried out effectively for separation of copper-lead; Adopting processing of copper middle to concentrate a cyclone classificating and a mill regrinding, it solved the vicious cycle of the lead and was of low dissociation.

其主要技术创新点有：采用高效捕收剂BP实现铜铅优先浮选；采用高效无毒组合抑制剂实现铜铅的有效分离；采用铜中矿集中旋流器分级再磨处理解决了铅的恶性循环和单体解离度低，有效地解决了铜铅分离的技术难题。

Lead-acid battery ; grid ; lead-silver ; lead-silver-lanthanum alloy ; electrochemical behavior

铅酸蓄电池；板栅；铅银；铅银镧合金；电化学性能

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。