During the past 150 years our knowledge of natural world has been doubling every 15 years.

在过去的150年中,有关自然界的知识一直以每15年加一倍的速度在增长。

属类：工程技术-科技英语-

He is doubling the part of a preacher with a teacher in this play

在这个剧中,他兼演教师和牧师两个角色。

属类：综合句库--

Presentation of Frequency Doubling Perimetry in Patients with Primary open-angle Glaucoma

早期原发性开角型青光眼倍频视野的改变

属类：行业术语-中文论文标题-

An increase/decrease of 3 DIN units indicates a doubling /halving of film speed ,that is a film of 21 DIN(100ASA)is half the speed of24DIN(200ASA)film ,and double the speed of an 18DIN(50ASA)film.

增加或减少感光3DIN,则相应增加或减少感光速度一倍。例如,21DIN(100ASA)的感光速度比例24DIN(200ASA)慢一倍,但比18DIN(50ASA)的菲林快一倍。

属类：行业术语-印刷-

A fold in cloth made by doubling the material upon itself and then pressing or stitching it into place.

褶皱衣服上的褶,通过将衣服的材料对折叠,然后在衣料上再压紧或缝在一起而制成

属类：综合句库--

Then the mule said to him glaringly:' Will you complain now about my feed doubling yours?'

这时骡瞪着驴说:'你现在还会认为我不该多吃一倍食物吗?'

属类：综合句库--

Doubling : In addition to the image,there appears a shadow image.This defect may be caused by the waviness of paper which contacted the plate twice.In offset printing,other than a loose blanket,doubling usually happenbs in multi-colour press.

重影:随着印刷品的印纹,出现一个像影子的印纹的情况。这故障可能是纸张起波纹,接触版面两次而引致。在柯式印刷方面,除因胶布松弛外,重影多数出现于多色印刷机上。

属类：行业术语-印刷-

End play: The longitudinal movement, or play, possible at the end of a revolving part in a mechanism. The play would cause printing defects such as doubling or ink streak.

轴向振动:一个回转部分在转动到末端时可能出现的纵向移动或振动。这个振动可能引致“重影”或“墨条痕”的印刷故障。

属类：行业术语-印刷-

Spinning preparatory, spinning and doubling (twisting)machinery-Tubes for ring-spinning, doubling and twisting spindles, taper 1:38 and 1:64

准备纺纱机、纺纱机和并线(捻线)机.环锭纺纱、并线用筒管

属类：行业标准名称-国际标准-BS ISO 368-1993

Study on the Increasing Doubling Rate of Pollen Seedling by Combination of Natural Double and Medication Double

自然与人工加倍技术结合提高春小麦花粉植株加倍率的研究

属类：行业术语-中文论文标题-