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1·It's a variable-pitch propeller, which is like having gears on a bike, Land says.

“这是一个变距螺旋桨，就像在自行车上安齿轮一样，”兰德说。

2·In order to get a good performance on preventing cavitation, the impeller of magnetic driving pump is designed in low-NPSHR method and variable-pitch inducer is installed.

为了获得良好的抗汽蚀性能，对磁力泵叶轮采取低汽蚀余量设计措施，同时配置变螺距诱导轮。

3·In this paper, theoretical and experimental investigation on the newly developed equipment of renewable tidal-current energy spring-control vertical-axis variable-pitch turbine is presented.

本文着重阐述了一种新型的潮流发电装置——弹簧控角竖轴直叶水轮机的工作原理和试验研究过程。

4·To improve the efficiency of wind power utilization, we employ more and more variable-pitch controllers and variable-speed constant-frequency (VSCF) controllers in wind-power generating systems.

风力发电系统为了更充分更有效的利用风能，越来越多的采用变桨控制系统和变速恒频控制系统。

5·Compression cancellous bone screw with both ends thread is a Variable pitch screw designed tO provide rigid 'fixation of cancellous bone fracture.

双端螺纹松质骨加压螺钉的特点是两端螺纹具有不同的螺距，无螺帽。

6·This paper introduces a design method of variable pitch screw, This methed make use of multinomial, bring out the boundary conditions which the design need and the operating range of the methed.

本文介绍了一种变螺距螺杆的设计方法，该方法采用多项式，并提出了设计所需的边界条件和这种方法的使用范围。

7·In view of this, a variable pitch valve spring is designed to eliminate the axial shifting and radial drifting of the valve disk and improve the service life of the valve.

鉴于此，笔者试图设计泵阀的变螺距弹簧，以消除阀盘的纵向振谐窜动和径向失稳漂移，提高泵阀工作寿命。

8·It is difficult to machine the variable pitch of screw part on the CMC lathe without variable pitch cutting faction.

对于只具备普通螺纹切削功能的数控车床，一般来说不能加工变螺距的螺纹。

9·Once the program is loaded, only a few parameters are given, the development drawings of variable pitch helical blade will be obtained.

该程序一经调用，只要给出几个相关的参数，即可绘出变螺距螺旋面展开图。

10·The paper analyses the structural characteristic and work principle of screw with variable pitch, designed machining technics, put forward a particular method of nc programming.

文中分析了异型截面供送变螺距螺杆的结构特点和工作原理，设计了其加工工艺，提出了一套加工该螺杆的独特的数控编程方法。