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The modal tests of PCB and PCB assembly (free boundary condition and fixed boundary condition) were carried out. The equivalent elastic modulus and damping parameters of PCB can be gained, and the fixed boundary condition of finite element model was also determined. These will help to the following work. Second, drop impact tests of three different heights were carried out. Strains and acceleration responses of PCB were measured. Failed BGA packages of different test conditions were dyeing, and cross section analysis of failed solder joints was conducted. It was found in our drop tests that the root cause of lead-free solder joints under drop impact was the combined effect of mechanical shock and PCB bending vibration.

针对JEDEC标准试件的局限性，提出了设计便于统计学研究焊点可靠性的试验试件的构想，利用有限元模态分析方法确定并验证了用圆形PCB组件替代JEDEC标准试件的可行性；通过一系列模态试验和有限元模态分析，确定了圆形PCB组件的相关试验参数，这不仅为跌落碰撞下PCB组件有限元模拟确定了较为合理准确的有限元模型，而且为正确地评价跌落碰撞下PCB组件的可靠性问题奠定了基础。

Methods: FOLFOX4 regimen was oxaliplation 100mg/m~2, 2 hours iv drop on d1 , calcium foliate 200mg iv drop 2 hours on d1.d2, followed by fluorouracil 400mg/m~2 iv on d1.d2 and fluorouracil 600 mg/m~2 iv drop d1.d2,and repeated every 2 week.

采用FOLFOX4方案，即L-OHP100mg/m2，静脉滴入2h，d1；CF200mg，静脉滴入2h，d1.d2；注射后立即静脉推注氟尿嘧啶(5-Fu)400mg/m2，d1.d2；5-Fu600mg/m2持续静滴d1.d2；每2周重复，28天为1周期。2个周期化疗后进行疗效评价。

Jin Shajiang trunk stream can develop the fluvial drop that use to be rice of 2 1 80, trunk stream of river of elegant rice huller can develop drifting fluvial drop to be rice of 2 82 7, the big trunk stream that cross a river can develop the fluvial drop that use to be 2 636 rice.

金沙江干流可开发利用的河流落差为 2 1 80米，雅砻江干流可开发利用的河流落差为 2 82 7米，大渡河干流可开发利用的河流落差为 2 636米。

If the user releases the mouse button in the interstice between valid drop candidates, or over an invalid drop candidate, there is no target and the drag-and-drop operation ends with no action.

如果用户在有效的拖放候选对象之间或无效的拖放候选对象上释放鼠标，那么就没有目标对象。拖放操作结束，并不执行任何操作。

2 Treatment method is less than a month treat a little patient to use method of massage drop medicine first, treat 1~2 week, 2~3min is massaged before daily drop medicine, be more than the little patient of a month, if drop medicine treats 1~2 week to did not see,improve to still have apparently weep the person that reach secretion, applied medicaments pressurization rinses lachrymal path, use pinhead of vein of skin of tube head of nylon of self-restrained and different type to grind blunt, make rinse a needle continuously, groovy operation, after syringe needle inserts lachrymal canaliculus, nylon the canal is secured with adhesive plaster at the head, undertake rinsing, 1 / D, with oxygen fluorine to lotion Sha Xing adds loose diluent of rice of ground a place of strategic importance, pressurization rinses 3~4 second, invalid still, undertake probing of groovy tear path is operated.

我科自2000年1月至2006年12月，共治疗新生儿泪囊炎178例、230眼，疗效满足，报告分析如下。1资料和方法1.1一般资料新生儿泪囊炎患儿168例、230眼，男102例，女66例，年龄：2d~3个月，均为本院眼科门诊确诊的新生儿泪囊炎患儿。1.2治疗方法小于1个月的首次就治患儿采用按摩滴药法，治疗1~2周，每日滴药前按摩2~3min，大于1个月的患儿，如滴药治疗1~2周未见明显好转仍有流泪及分泌物者，应用药物加压冲洗泪道，采用自制不同型号尼龙管头皮静脉针头磨钝，制成直的冲洗针，常规操作，针头插入泪小管后，将尼龙管用胶布固定于头部，进行冲洗，1次/d，冲洗液用氧氟沙星加地塞米松稀释液，加压冲洗3~4次，仍然无效的，进行常规泪道探通术操作。1.3治疗标准无流泪、无分泌物、泪道冲洗畅通，反之则无效，结果168例，230眼，治愈166例，228眼，其中按摩治疗49例，冲洗86眼，探通31眼。。。

Quality equipment categories: Programmable constant temperature and humidity box, high and low temperature test chamber, salt spray test machine, oven, heat aging test machine, cold / anti-yellowing chamber, hot and cold impact test machine, hot wire testing machine, Vertical + level of combustion testing machine, testing machine tracking, key life testing machine, plug and socket load life testing machine, spring testing machine, 90-degree peel strength test machine, the breakdown strength test machine, Central compressive strength testing machine, paper tube / carton compression testing machine, wearable rub tester, plug test machines, rotor life durability testing machine, testing machine Life expectancy clamshell mobile phone, mouse, roller-life testing machine, vibration test machine to simulate the vibration motor transport units, cell phone drop test machine, packaging drop test machine, torsion testing machine wire Qu, sudden pull plug wire tester, static tensile testing machine, wire bending rock testing machine, wire elongation testing machine, universal testing machine, tensile testing machine, drop-ball impact testing machine, fatigue life testing machine headphones, headsets Life expectancy tensile testing machine, push pull, the cloth, carvedilol, Victoria, Xiao, Lane, Shaw Sclerometer, video measuring instrument, precision mapping microscope, digital projectors, stereomicroscope , metallographic microscope, reading microscope, continuous zoom microscope, magnifying glass, caliper, micrometer, standard weight, height, the thickness, the slab of rock, electronic weight, said that electronic counting, electronic scales, analytical balance, standard light boxes, etc..

可程式恒温恒湿箱、高低温试验箱、盐水喷雾试验机、干燥箱、热老化试验机、耐寒/耐黄变试验箱、冷热冲击试验机、灼热丝试验机、垂直+水平燃烧试验机、漏电起痕试验机、按键寿命试验机、插头插座负载寿命试验机、弹簧试验机、90度剥离强度试验机、破裂强度试验机、环压强度试验机、纸管/纸箱抗压试验机、耐磨擦试验机、插拔力试验机、转轴寿命耐久试验机、手机翻盖寿命试验机、鼠标滚轴寿命试验机、振动试验机、模拟汽车运输振动台、手机跌落试验机、包装跌落试验机、电线曲挠试验机、插头线突拉试验机、静态拉力试验机、线材弯折摇摆试验机、线材伸长率试验机、万能材料试验机、拉力试验机、落球冲击试验机、耳机疲劳寿命试验机、耳机拉伸寿命试验机、推拉力计、布、洛、维、肖、里、邵氏硬度计、影像测量仪、精密测绘显微镜、数字投影仪、体视显微镜、金相显微镜、读数显微镜、连续变倍显微镜、放大镜、卡尺、千分尺、标准砝码、高度计、厚度计、岩石平板、电子计重称、电子计数称、电子天平、分析天平、标准光源箱等。

Based on the liquid water content and optical visibility, the method for determining the parameters of gamma drop size distribution model of fog and clouds are developed, the drop size distributions for advection and radiation fog are obtained with empirical relations of the liquid water content and the visibility, the characteristics of drop size distribution for different kinds of fog are analyzed and discussed.

提出了利用云雾含水量和能见度确定gamma云雾滴尺寸分布的方法，利用雾的含水量和能见度的经验关系，得到了辐射雾和平流雾的雾滴尺寸分布模型，并对不同类型雾的尺寸分布特征进行了分析和讨论。

Saying nothing, the man took a bottlenecked gourd, placed it on the ground, and put a coin with a square hole in the center over the top. He poured toil from a wooden ladle drop-by-drop into the gourd, without spilling a sinle drop on the coin. The man then turned to Chen Yau-tz and said,"That was also nothing. It's just a matter of practice makes perfect."Thus, the meaning of this idiom is that skill comes from repeated practice.

卖油的不说一句话，随手拿出一个葫芦放在地上，用一个方孔的铜钱盖在葫芦口上慢慢地用木杓子装满了油滴下去，只见油从钱孔中滴进去，可是铜钱上面一点儿油也没有沾上，这时卖油的才说：「我这也没甚么，只是熟能生巧罢了。

Experiment shows that both the dry plate pressure drop and the wet plate pressure drop increase with the increase of the kinetic energy factor in plate hole but have no influence of the height of cap. The wet plate pressure drop linearly ascends as the clear liquid height increases. Liquid lift-up increases at first then decreases with the increasing of the kinetic energy factor in plate hole, increases with the clear liquid height increasing and the height of cap decreasing, but as the kinetic energy factor in plate hole increased, the influence of height of cap will gradually decreased.

实验表明干板压降、湿板压降均随板孔动能因子的增大而增大，不受罩体高度变化的影响，湿板压降随清液层高度的增大而增大，成正比关系；液体提升量随板孔动能因子的增大先增大后减小，随清液层高度的增大而增大，随罩体高度的增大而减小，但随板孔动能因子的增加，罩体高度的影响逐渐变小；漏液量随板孔动能因子的增大迅速减小，随清液层高度的增大而增大，但接近漏液点时清液层高度的影响不明显。

A few brands of drop style bars come with a choice of how much lower the drop section of the bar is from the top. Unless you are a track sprinter or a criterium racer, you don't need the very deep drop bars.

有一些品牌的公路车把，他们的设计理念在於从顶部算起的下垂幅度，除非你是一名场地自行车手，你都不会需要一个深度下垂的车把。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。