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But the volume fraction of particles in composite fabricated by prefabricate method was finite.

但是预制件法制备的复合材料的颗粒体积分数有限,无旋涡机械搅拌法的制备温度高,故这两种方法均不适合制备体积分数高(大于 20%)、颗粒尺寸小的复合材料而利用半固态机械搅拌法,能够将颗粒尺寸为3.5μm;体积分数为40%的SiC颗粒加入到金属Al中,但是当颗粒体积分数大于30%时,机械搅拌方式不能将颗粒均匀地分散在基体金属中。

The pregame memorial had solemn moments but brightened as each of the Virginia Tech and Yankees starters was introduced.

赛前的纪念仪式是庄严肃穆的,但在介绍到维吉尼亚理工学院和洋基的球员出厂时,气氛又活跃起来。

When we select the abutments, we must pay addi- tional attention to the periodontium of premolar.

在选择固定桥基牙时,双尖牙要特别重视其牙周组织的健康,对于牙槽骨吸收的双尖牙必须增加基牙以减轻其负荷。

According to Mr Gevisser, the extreme prickliness Mr Mbeki commonly shows when faced with criticism is also the result of the terrible frustration he feels at being unable fully to deliver on the impossible expectations of his fellow South Africans.

在基维瑟看来,姆贝基自认为根本无力实现非洲同胞那些不切实际的理想,因而觉得受到重挫。正是这种受挫感使他在遭遇批评时表现出极度痛苦。

A high frequency secondary instability mode is detected, which rides on the primary instability wave in time domain and appears at the inflectional point of mean streamwise velocity profile.

结果表明,高频二次不稳定性在时域上表现为骑在基频波的特定的相位区域。

When the tongs installs on the machine bed principal axis, the tongs install the to should have the enough match accuracy with principal axis cowgirl surface, and guarantee the gearing the stability dependable.

当夹具体在机床主轴上安装时,夹具安装基面与主轴相应表面应有足够的配合精度,并保证安装稳定可靠。

Mutations in 26-amino acid downstream portion from the ISDR remained a prognosticator of SVR in the era of optimally tailored therapy.

故ISDR下游的26个胺基酸突变仍可作为当代合宜地个人化治疗时持续病毒反应的预测因子。

The flux hysteresis controller was ignored in the constant torque region and an improved method was proposed to make the estimation of torque easier.The proper stator voltage space vector was selected based on the output of the torque hysteresis controller and the sector which the current rotor flux locates in.

摘 要:针对无刷直流电机直接转矩控制中磁链观测困难、控制复杂等问题,提出了一种应用于无刷直流电机二二导通方式下的新型直接转矩控制方法:在电机基频以下调速时,略去了常规的磁链观测控制环节,改进了转矩计算方法,通过转矩滞环控制选择所施加的空间电压矢量。

A new brushless DC motor DTC scheme was studied to solve those problems associated with direct torque controlof brushless DC motor,such as difficulty to control flux and complexity to estimate torque.The flux hysteresis controller was ignored in the constant torque region and an improved method was proposed to make the estimation of torque easier.The proper stator voltage space vector was selected based on the output of the torque hysteresis controller and the sector which the current rotor flux locates in.

摘 要:针对无刷直流电机直接转矩控制中磁链观测困难、控制复杂等问题,提出了一种应用于无刷直流电机二二导通方式下的新型直接转矩控制方法:在电机基频以下调速时,略去了常规的磁链观测控制环节,改进了转矩计算方法,通过转矩滞环控制选择所施加的空间电压矢量。

Strangers terrified him, yet his affection for and protectiveness of Becky brought him out of the desert and fields at the sight of every unknown pickup or car.

陌生人使他感到害怕,然而每次看到不熟悉的小货车或汽车时他对贝基的友爱与保护都让他走出荒地和田野。

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推荐网络例句

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47:5 法老对约瑟说,你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法,同时,采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。

Hey Big Raven, The individual lies dont matter anymore - its ALL a tissue of lies in support of...

嘿大乌鸦,个别谎言的事不要再-其所有的组织的谎言,在支持。