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- Xia Liqun , Zhang Xinguo.Development of DDV (direct drive valve) servo actuator[J ].Journal of Northwestern Polytechnical University,2006,24 (3) :308-312. (in Chinese) . [2] 夏立群;张新国.;直接驱动阀式作动器研究[J]
- direct drive valve 直接驱动阀
- direct drive valve (DDV) 直接驱动阀（DDV）
- direct drive valve(DDV) 直接驱动阀
- Conventional Motor or Direct Drive Rotary? 选择传统电机还是直接驱动旋转电机?
- Direct drive via a coupling (fig 2). 是通过联轴节的直接驱动(图2)。
- Robust cast iron valve body with a fabricated rotor, polyurethane adjustable replaceable blades and a direct drive. 铸铁阀体配合支架式转子,聚酯易拆除叶片和直驱方式。
- Twin cylinder direct drive, synchronization by steel cable. 双油缸直接驱动，钢丝绳平衡系统；
- Open and shut-down is operated by the density variati on bet ween condensation water and steam,Condesation water can drive valve directly,featuring precision and reliability. 倒置桶疏水阀的开启和关闭是根据凝结水和蒸汽的密度差来动作的，凝结水可直接驱动疏水阀启闭，其动作准确，可靠性高。
- GDC-JQelectro high vacuum butterfly valve uses electromagnetic force to directly drive valve disc working. thus to make valve opened ro closed. GDC-J型电磁高真空挡板阀是以电磁力为动力直接带动阀板动作，使阀门开启或关闭。
- Operating Instructions: Direct Drive to replace the type of clothes can be switched. 操作指南:直接拖动要更换的衣服类型就可以换装了。
- Electro High Vacuum Flapper Valve GDC-JQelectro high vacuum butterfly valve uses electromagnetic force to directly drive valve disc working. thus to make valve opened ro closed. GDC-J型电磁高真空挡板阀是以电磁力为动力直接带动阀板动作，使阀门开启或关闭。
- Direct drive to the rolls with heavy-duty helical bevel gears where the output shaft is directly coupled to the roll shaft. 高坚固的螺旋斜线轴承直接驱动辊筒。输出轴直接连接辊轴，中间没有任何传动消耗。
- We highly recommend Direct Drive Modular Mounter GXH-1S for the pursuit of total productivity. 为了追求更高的整体生产性;我们向您推介直接驱动模块贴片机GXH-1S.
- Rotary, linear, and direct drive servomotors are available in 110, 230, and 480 VAC options. 旋转的、线型的和直接的驱动补助马达间接变速装置都可从110, 230和480 VAC中得到。
- Ultrasonic motor is a new type direct drive motor emerging with the development of high power density piezoelectric materials. 超声电动机是随着高功率密度压电材料的发展而出现的一种新型直接驱动电机。
- KDF series have two kinds of products, direct drive type and belt drive type.Can choose three phase and single phase motors for direct drive type. KDF系列有直联传动和皮带传动二种，直联传动根据需要可配用三相和单相电机。
- GDC-] Electro High Vacuum Flapper Valve GDC-JQelectro high vacuum butterfly valve uses electromagnetic force to directly drive valve disc working. thus to make valve opened ro closed. GDC-J电磁高真空挡板阀 GDC-J型电磁高真空挡板阀是以电磁力为动力直接带动阀板动作，使阀门开启或关闭。
- Adopt gyral zero-finding technology to ensure the correction of detected part and avoid the。dislocation resulted from the stepout of direct drive. 采用回旋找零技术，确保测试位置的准确无误，避免了因直接驱动失步而造成的错位。
