学科生物学 词目顶器 英文apical organ 释文顶器系担轮幼虫等以顶板为中心的构造
它利用雷达和光学传感器来计算出入弹的道弹的轨迹，然后从一车顶架(图)发射出射弹去拦截导弹。
It USES radar and optical sensors to calculate the trajectory of an incoming warhead, and then intercepts it with a projectile fired from a roof-rack (pictured).
自顶向下的语义技术不需要发布者做任何事情，因而可以想像上下文、文本工具可以结合在浏览器里。
Top-down semantic technologies need to work without publishers doing anything; and so to infer context, contextual technologies integrate into the browser.
在自顶向下的开发过程中，客户端和服务器端的开发人员使用WSDL(“顶部”)为各自的环境生成必要的构件(“底部”)。
In top-down development, both client-side and server-side developers use WSDL (the top) to produce the artifacts (the bottom) necessary for their respective environments.
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