精密

The latest research progress and applications of inchworm actuator with MEMS teeth were presented comprehensively.

全面介绍了MEMS微齿型尺蠖驱动器在国外的最新研究进展及应用，该驱动器具有大输出力和高频大功率密度的特点，是高性能精密直线驱动器的一个重要发展方向。

In the interest of getting good performance of speed and loading capability of the micro motor, at the same time ensuring the high rotary resolution, put forward a kind of new precise rotary motor using piezoelectric stack as actuating element based on inchworm motion.

为了保证微小型电机的速度和承载能力，同时获得较高的运转分辨率，提出一种以压电叠堆为驱动元件基于尺蠖运动原理的新型精密旋转电机方案。电机结构中转子无绕线结构，定子采用柔性铰链双侧对钳方式交替对转子起到钳位作用。

Concrete was not a barrier, as she would be placing five highly sophisticated bugs inconspicuously in the conference rooms.

具体是不是一个障碍，因为她将配售5高度精密的错误inconspicuously在会议室。

Driving toothed gear precision forgings have been successfully produced by compound precision form ing technology combined waFln forging of blank with cold extrusion not only with high surface cleanness,dimension accuracy and small post machining of outer surface but also the indention inner gear formed by cold extrusion can be put into use without post machining,with notable energy saving and material saving and economic benefit.

精锻件不仅表面光洁、尺寸精度高、外表面的后续加工余量小，而且冷挤压成形的锯齿状内齿无需后续加工就可以装配使用。因此，精密成形具有显著的节能、节材效果，经济效益十分显著。

The utilization rate of large precise instrument is a key indictor to evaluate its comprehensive effect.

大型精密仪器设备的利用率是考核评估其综合效益的一个重要指标。

But they worry about descending into a valley of imprecision and ineloquence before they master the alternative tricks and tactics required by any new ascent.

但是他们担心在他们精通上升至任何新阶段所需的转换的技巧与策略前，跌至到一个不精密和无说明力的"谷底"境地。

The calcalus learns is a mathematic branch connected closely with scientific application.Infinitesimal is an important componant in the theoretical system and has an outstanding effect on the forming of the basis and conception of the theory. infinitesimal ; calculus ; the calculus learns ; differential calculus ; integral calculus

引 言微积分学是建立在实数、函数和极限理论基础上，研究函数微分、积分以及有关概念与应用的数学分支。17世纪精密科学的飞速发展，天文学、力学、光学、工业技术要求数学彻底革新，导致了无穷小概念的问世，促使费马增量理论开创微分学的先河，同时奠定了柯西的极限理论。

Companies specializing in the production of large precision casting and forging steel ingot, and other types.

公司专业生产大型精密铸钢件和各类锻造钢锭等。

The amplifier has additional modulation and demodulation,and has the advantage of smaU input bias current, low maladjustment voltage and temperature excursion, exact feedback speciality and high common mode control ratio.

具有输入偏置电流小，低失调电压和温度漂移以及精密的反馈特性和高的共模抑制比能力。

High sensitivity, constant bleed and pressure control under varying flow, input pressure and temperature conditions.

高灵敏度，在不同流量，输入压力和温度条件下恒定放水和压力控制。标准高精密调节流量至40SCFM。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。