• 去年纽约州拉丘兹市康涅狄格州首府哈特福德市做了一项试验,让警察连续发出大量法庭传票,使得两地边开车边使用手机的行为大幅减少

    Syracuse, New York, and Hartford, Connecticut, last year tried an experiment in which cops issued dramatically more citations for two weeks and mobile-phone use fell sharply in both places.

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  • 试验必须通风良好手套面具以防水蒸气焊剂烫伤

    Do this test must be in a well-ventilated place, and to wear gloves, masks in case of water vapor and tin flux burns.

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  • 研究了轴承合金分析方法试验结果表明该方法准确度,并且测定铅含量的范围

    The analysis method for lead in tin-base bearing alloy is studied. It is showed from the test that it has high accuracy and wide measure range.

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  • 传统的格利雅合成四丁基工艺进行改进,并报道了工业试验的效果。

    Improvement on the Grignard method is made and the semi industry experiments are reported.

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  • 青铜进行了精炼试验

    The tests of refining by oxygen blow were made on melting low tin bronze.

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  • 基础上,我们对几种卤化物作比较试验发现加入测定灵敏度最高

    On the basis of this, from the comparative experiments of several halogenides, we have found that the addition of sodium bromate has the highest sensitivity effect in the determination of tin.

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  • 大量试验基础,整定出炉炉温程序控制设定温度曲线

    Based on the experiments, two temperature setting curves of tin freezing point stove are established.

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  • 雄性奥利亚罗非鱼试验材料,研究了三丁基TBT鱼类精巢细胞凋亡影响

    The effect of tributyltin chloride (TBT) on apoptosis of fish spermary cell was researched by using male Oreochromis aureus as experiment material.

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  • 经过试验确定作为芯片粘结材料

    After experiment, tin slurry is determined as the binding material of chips.

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  • 冶山尾矿坝工程例,探讨数值在尾矿库坝体岩土孔隙压力消散试验中的应用,对提高试验精度、减少试验开支、指导工程安全施工具有现实意义

    With the help of numerical method it analyzes the data of pore water pressure vanishing test, which can increase the precision of the test and cut the expense of engineering investigation.

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  • 采用标准加入原子吸收分光光度法测定合金锭液铅的浓度试验确定最佳的测定条件

    The lead concentration in Pb-Sn alloy plating bath was determined by standard additional atomic ab-sorption spectrometry, and the optimal determination conditions were obtained.

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  • 糊料选择染料筛选、地色染料染色工艺、雕试验工艺几个方面研究加工zsd雕印性能

    Discharging properties of ZSD is discussed from respects of selections of thickeners, dyestuffs, background dyeing process, as well as discharge printing process.

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  • 所以耶和华如此:看安放石头作为根基试验过的a石头,是宝贵的房角石,作为稳固的根基;

    Therefore thus says The Lord Jehovah: Indeed I lay a stone in Zion as a foundation, A tested stone, A precious cornerstone as a foundation firmly established;

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  • 实验室试验表明回收率分别(%):95,92,90,同时还可回收残渣中的铅锑。

    The results of laboratory experiments have shown that the recovery of tin, silver and gold can reach 95.92 and 90% respectively;

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  • 文章通过试验证明焊料凸底部凸块金属焊层结合可延长无铅焊接倒装寿命

    In the article experiment prove:combination with feine tin-solder-bumps and underbump-metalliza with cobalt be able to longthen life of leadless flip-chip-solderng.

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  • 本文报道铁精矿制链篦机-回转窑还原焙烧连平磁铁矿脱除试验结果

    This paper presents the results of studies of a method for removing tin and zinc from pellets made from Lian-ping magnetite ore containing said metals by reductive roast in a grate-kiln.

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  • 采用正交试验研究了氰化合金工艺中各因素水平镀液、镀层性能关系,优选种最佳工艺配方。

    A cyanide tin - copper plating process was optimized by means of orthogonal test. The effect of bath components of electrolytic solutions and electrodeposits was investigated.

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  • 试验结果表明、铟基钎料中的有益元素最佳含量5%。

    The results show that Sn and In are advantageous elements in silver filler metal and the optimum content for both is up to 5 % respectively.

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  • 碱性酸盐镀溶液中进行微粒共沉积试验,对所得-镍复合镀层磨擦性能进行研究。

    Experiment of co-deposition of Ni particles with Sn metal from alkaline stannate bath was performed and the friction performance of the resulting Sn-Ni composite coatings was investigated.

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  • 多种铅焊料进行一系列不同条件下漫流试验 ,分析它们铜表面上铺展状况 ,最后归纳出焊料成分、温度、助焊剂对软焊料漫流影响的规律。

    The results show that the melting properties of the solder alloy are satisfactory, and the soldering temperature and time have much effect on the shearing-strength of the joints.

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  • 针对选厂废弃的精选溢流进行了选矿试验研究采用振动矿泥离心机组合粗选,运用重选-浮选 -磁选(水冶)联合工艺流程 ,有效地解决了钨细泥综合回收问题。

    In accordance with some wolfram tin effuse come from cleaner in a concentrating mill, this study adopt vibrated slimes shaking table combining with centrifugal separator to put up a roughers.

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  • 介绍控制其它一些有效措施须生长加速试验

    And thereby an effective method for controlling whisker forming as well as the solutions for other difficult problems in pure tin electro...

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  • 介绍控制其它一些有效措施须生长加速试验

    And thereby an effective method for controlling whisker forming as well as the solutions for other difficult problems in pure tin electro...

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