约等于

It is reported that domestic steel mills have agreed with Rio Tinto chief in accordance with the Association last year, 6.7 fold in advance the price of iron ore price, as Nippon Steel and Rio Tinto iron ore reached a comprehensive long-HS price drop about 33%, the fluid control experts believe that a senior, this means that Rio Tinto approved in disguise starting price, but the China Steel Association has always stressed that China will not follow the initial price of Rio Tinto.

据悉，国内已有钢厂同意力拓按照去年长协价格6.7折预付铁矿石货款，由于新日铁与力拓达成的铁矿石长协价格综合降幅约33％，因此资深流体管专家认为这等于变相认可力拓的首发价，但中钢协一直强调，中方不会跟随力拓的首发价格。

It is proved that if'sparse NP complete sets under polynomial-time Turing reductions exist'then 'SAT is polynomial-time non-adaptively search reducible to decision', and that if 'P is not equal to NP'then either'SAT is not polynomial-time non-adaptively search reducible to decision'or'SAT is not polynomial-time truth-table reducible to bounded approximable sets', and that if'P is not equal to NP'then'sparse complete sets for NP under polynomial-time disjunctive reductions do not exist'.

因为用现有的证明技术不可能绝对地解决这个假设，本文研究了这个假设与其他关于SAT结构性质的假设之间的关系，证明了如果'NP有多项式时间图灵归约下的稀疏完全集'则'SAT是多项式时间并行地搜索归约为判定'，以及如果假设'P不等于NP'，则要么'SAT不是多项式时间并行地搜索归约为判定'，要么'SAT不能用多项式时间真值表归约归约为有界可近似集'。

The visible region extends from about 390 to 780 nanometers (a nanometer is one billionth of one meter).

可见区域延伸至约390至780纳米（ 1纳米等于十亿分之一1米）。

Under the tutelage of Cosmas, John made such rapid progress that, in the enthusiastic language of his biographer, he soon equalled Diophantus in algebra and Euclid in geometry.

根据监护的科斯马斯，约翰取得如此迅速的进展，在热烈的语言，他的传记作家，他很快等于丢番图代数和欧几里得几何。

The simulation results shows that when the hydroforming for real axle housing needs two bulge processes and the specific value of the two bulge ratio is about 1, the result is the best one; To obtain an appropriate route of loading force need adjust internal pressure and axial compression force for many times and according to the failure, the size of the two forces which has been mentioned can be rapidly and rationally adjusted; Because of good greasing conditions influencing largely, reducing the friction between tube blank and die inside surface as well as possibly not only makes more materials flow into the bulge area but effectively diminishes the axial compression force; The good or bad characteristics of tube blank material is also one of the decisive factors and when material is selected, we first consider its' formability.

模拟结果表明，当后桥壳需要两次进行胀形，两次胀形比比值约等于1时，胀形结果最好；合适的加载路径要经过多次调试，能根据胀形缺陷对内压力和轴向力的大小进行迅速地合理调整；良好的润滑环境对后桥壳液压胀形的影响巨大，要尽量减小管坯与模腔内壁的摩擦力，不但使更多的材料流入胀形区，而且能有效的降低轴向力的大小；管坯材料性能的好坏也是影响胀形的决定性因素，选材时首先要考虑材料的成形性。

Smith chart was used first, an resonator was designed, whose center frequency and impedance ratio are 930MHz and 0.172 respectly.

设计了一中心频率为930MHz，阻抗比为0.172的介质同轴谐振器，其总长度约等于八分之一波长。

In addition, the leakage coefficient decreases with the decrease of gap width at the same rotational speed.

研究结果表明：用相对流量系数（转动时的流量系数与静止时的流量系数的比值）与速比（周向速度与轴向通流速度的比值）的函数关系表征泄漏量随转速变化的规律时，存在一个临界速比约等于1.0；低于这个临界速比时，转速对泄漏量的影响不明显；高于这个临界速比时，泄漏量随转速的增大而减小，在很高的转速下（6000r/min以上），泄漏量至少减小了5.1%；相同间隙下，泄漏系数随着压比的提高而近似线性增加；相同转速下，随着密封间隙的减小，相对泄漏量逐渐降低。

If a project can attract a million participants, it could gain access to dozens of TeraFLOPs of CPU power and perhaps a Petabyte of storage.

如果一个项目能吸引到数百万的志愿参与者，就可以获取几十 TeraFLOPs(处理器浮点运算能力度量单位，1 teraflops=每秒 1 万亿次数学运算)的 CPU 处理能力，或者是 petabyte(存储系统衡量标度，一个 Petabyte 级的磁盘驱动器约等于2097 个 500GB 的硬盘)的储存能力。

Firstly, the The function of the yawing mechanism and the influence of the train velocity on the wire rope pulling force were studied theoretically and the wire rope pulling force was proved to be always approximately equal to the advance pulling force.

首先在理论上分析了转向机构的作用和列车速度对钢缆拉力的影响，证明了钢缆拉力总是约等于钢缆预拉力。

METHODS: After isolated the PBMCs and blood-plasma from adult human peripheral blood by Ficoll-Hypaque centrifugation, the PBMC culture procedure with or without the self-blood -plasma was applied to polarize T cells in vitro , these cells were polarized by PHA(20 mg/L),non-PHA respectively.

用Ficoll-Hypaque梯度离心法分离出正常成人抗凝外周血单个核细胞和血浆，将PBMC置于含或不含有自身血浆环境中，并在植物血凝素(PHA ，2 0mg L)的刺激下进行培养，培养 2 4、48、72h后收获细胞，分别用双色免疫荧光标记，以流式细胞术对CD4+ T细胞表达表面分子CCR3、CCR5进行分析。结果：CD4+ T细胞受自身血浆和PHA刺激后向Th1 Th2两个方向极化，2 4、48、72h后极化率分别达到(13 2 8± 1 5 9)%(12 70± 1 6 5 )%、(17 19± 1 0 3)%(17 5 0± 1 30 )%、(19 49± 2 87)%(18 5 8± 1 49)%；而只有PHA刺激的极化率很低，两组有显著性差异(P 0 1)；Th1∶Th2之比约等于 1。

With the development of highway construction, the speed of cars has been gradually increased.

随着公路的发展，汽车的车速也在不断提高。

So we basically had to develop a bond with the animal in terms of socializing with it.

所以我们就主要想通过跟它沟通的方式来建立一种良好的关系。