对苹果来说，开业一年的AppStore一直是其销售iPhone和iPod触摸装置的主要驱动力，不断提供给消费者新的应用程序，让他们不断回来下载。
For Apple, the one-year-old app Store has been a key driver of sales of its iPhone and iPod touch devices, by giving consumers new applications to keep coming back to download.
主要零件的计算、驱动装置的选择传动机构的设计。
Major parts, drive transmission mechanism of the choice of design.
蓄电池式电机车是煤矿井下一种主要的运输装置，目前主要采用串激直流电动机驱动。
Battery electrical locomotive is a main transportation equipment in the well of colliery, which is drived by series-excitation DC electromotor mostly at the present time.
电动执行机构是驱动和控制阀门主要装置，在实现管网自动化控制中发挥重要作用。
Electric actuator is an important equipment of driving and controlling valve, which plays important part in the field of realizing piping net automatization.
这种类型驱动装置的主要缺点是气源消耗，特别是使用在大通径阀门。
The major disadvantage of this type of actuator is air consumption, particularly when applied to large valves.
气动驱动装置主要零件材料及热处理要求。
Pneumatic drives the main components of materials and heat treatment requirements.
该系统主要由清扫头、机器人驱动装置、反射棱镜、CCD像机、图像监视器和计算机等组成。
This paper presents a robot detection system, which consists of cleaning unit, driving unit, reflecting prism unit, CCD camera, image monitor, and computer etc.
提出了一种基于环形激光的深孔内膛检测系统，该系统主要由环形激光发生器、反射锥镜、CCD相机以及驱动装置等组成。
A detection system based on ring laser used for inner wall of deep hole is proposed. The system mainly consists of ring laser, reflecting prism, CCD camera and driving unit.
主要介绍以可编程门阵列器件构成恒流源核心控制电路的设计思路，通过机电自控装置驱动可调变压器实现新的稳流方法，实验证明这一方法是可行的。
A design method of using GAL to make a constant current source is introduced, proving a new method of current stabilization by means of driving regulated transformer by a controlling device.
主要由驱动装置、张紧装置、回转装置、牵引链条、滑架、工字钢轨道及电气控制等组成。
This product mainly comprises driving device, tension device, back-whirling device, driving chain, sliding ramp, I-bean steel track and electrical controller.
主要介绍一种大功率超声波逆变电源装置的主电路、控制电路、驱动与保护电路的设计，并给出实验结果。
This paper introduces the design of high power supersonic inverting power supply, including main circuit, controlling circuit, driving and protecting circuits, and gives experimental results.
气动驱动装置缓冲行程长度与气动驱动装置主要零件缸体直径的关系。
Pneumatic drives pneumatic buffer stroke length and drive the main parts of the relationship between cylinder diameter.
详细地描述了它的主要部份——驱动装置，测角装置、红外光度计的工作原理和电路特点。
Its major parts-the operating principle and circuit feature of drivers, the equipment for measurement of telescope position and infrared photometer are introduced.
该设备主要由以下部分组成：进料系统、筛体、机架、驱动系统、出料装置，垂直吸风道(选择件)等。
The equipment is mainly composed of the following components: feeding system, sieve, machine rack, driving system, discharging device and vertical suction duct (optional).
该装置主要由测速装置和驱动装置两部分组成。
The device is mainly driven by the gun devices and the installation of two parts.
单个标准模块主要由中间通孔式连接手臂、履带驱动链传动装置、模块偏转锥齿轮传动装置、模块俯仰链传动装置、连接柄等组成。
A standard such module is mainly composed of the link arm, the link handle, the track driven system, the offset pitch joint, the offset yaw joint and so on.
气动驱动装置主要零件的主要表面的加工精度。
Pneumatic drive of the main surface of the main parts of the machining accuracy.
板式输送机主要由头轮装置、鳞板链条装置、尾轮张紧装置、机架和驱动装置组成（略）。
Plate conveyor head round the main device, the chain plate scale devices, the end of round tensioning device, rack and drive components.
主要方案是，在刮水装置回路中串接功率三极管或继电器实行驱动控制。
The basic program is that in the wiper circuit the power transistor and relay are connected in series to perform drive control.
本文主要介绍了高温高压复杂驱动体系三维物理模拟装置测控系统的结构设计和开发方法。
The measurement and control system of 3D high-temperature& high-pressure complicated replacing physical simulator is introduced, which includes structural design and developmental mode.
本文主要介绍了高温高压复杂驱动体系三维物理模拟装置测控系统的结构设计和开发方法。
The measurement and control system of 3D high-temperature& high-pressure complicated replacing physical simulator is introduced, which includes structural design and developmental mode.
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