Unique a 3 segments'temperature curve program achieves a stage heating with good protection of BGA.

1、

In large scale integrated chip field, the IC of BGA encapsulation was widely used.

在大规模集成芯片中以BGA( 球栅阵列)封装的IC芯片被广泛使用.

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2、

This technique has been successfully applied in the dimensional measurement of BGA chip leads.

此技术已成功应用于BGA芯片管脚的三维尺寸测量中.

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3、

The activities of MDH, HSL in backfat were strongly correlated to BFT ( P < 0.01 ).

背膘组织中的MDH 、 HSL与背膘厚呈极显著相关 ( P<0.01 ).

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4、

The construction of the BFM-910 indicator uses components with a long term time and temperature stability.

建造 BFM -910显示器使用的部件使用寿命长且温度稳定性好.

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5、

Features . Inductive meter BFM-910 is a highly accurate and stable device.

感应流量表 BFM -910是高度精确和稳定的设备.

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6、

But it is difficult to makeuse of BFG due to the low calorific value of BFG.

但是实际生产中由于其热值低,充分利用困难.

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7、

The fertilization inhibitory factors of BFF may be derived from serum rather than from follicular cells.

BFF的这种受精抑制因子可能来自血清而不是卵泡细胞.

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8、

Therefore, adding 10 % of mixing BFF in maturation medium could be the best choice.

因此, 成熟培养液中以添加10%的混合BFF较为适宜.

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9、

In vitro culture system of buffalo fetal fibroblasts ( BFF ) was investigated in this study.

本实验探讨了适合水牛胎儿成纤维细胞 ( BFF ) 体外培养的体系.

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10、

A new method for mold filling simulation based on body-fitted coordinate ( BFC ) is presented.

介绍了一种基于适体坐标系 ( BFC ) 的充型过程模拟方法.

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11、

Thep 16 protein expression of R-20 , R-30 , T-35, T-54 cells weremuch lower than that of BEP 2 D cell.

2与正常BEP2D细胞相比,R -20, R -30, T -35, T -54细胞p16蛋白mRNA的表达均降低.

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12、

In addition, the incrcasedcontent of left ventricular protein was alsosignificantly decreased by Bep treatment.

苄普地尔组左心室蛋白质含量较未治疗组亦显著减少,但未恢复至正常.

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13、

The risk analysis methods include BEP analysis, sensitivity analysis and probability analysis.

风险分析的方法主要有盈亏平衡分析、敏感性分析和概率分析三种.

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14、

In the experiment of classifying Chinese documents, it is BEP value is about 83 %.

在中文文本分类实验中, 可以达到83%的BEP值.

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15、

The study on BEM has been a challenging topic for the scientists, the engineers and technicians.

故对边界元法的研究一直很受学者和工程人员的重视.

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16、

The difficulty of treatment of the nearly singular integrals hindered applications of Boundary Element Method ( BEM ).

几乎奇异积分的计算困难阻碍了边界元法的工程应用.

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17、

A finite element method with boundary element method ( FEM-BEM ) is presented for computing electromagnetic induction.

提出了用有限元 - 边界元法计算三维电磁场感应问题.

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18、

Based on the original scheme, a new version fast multipole BEM is presented for two-dimensional elasticity.

在初始格式的基础上, 进一步提出适用于二维弹性力学问题的新型快速多极边界元格式.

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19、

The boundary integral in BEM Boundary Element Method effects the precision and the speed method.

边界元中的边界积分计算影响计算精度和计算速度.

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20、

Depois de iniciar o projecto , primeiramente faz bem o trabalho da prepara & ccedil ; & atilde ; o.

工程开工后, 首先做好施工准备工作.

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