telephoto lens是什么意思

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用法例句

Skillfully realizes long-distance range wind electricity closed-cycle control with the monkey vehicle electrically controlled box.

主要通过对掘进工作面局扇开关与风电闭锁开关相距太远,风电闭锁不起作用的问题进行分析,巧用猴车电控箱实现远距离风电闭锁,从而保证远距离风电闭锁能可靠工作,实现安全生产。

During investigation and analysis, writer researches relation of long distance resource for environmental influence with experience formula, selects a suitable mathematic model to indicates analysis of relation between pollutant content and long distance of pollution resource.

在以哈密红星皮革厂铬鞣废水中的重金属污染物 (铬 )对土壤污染影响的调查分析中 ,就远距离污染源对环境影响的关系用试验公式作了研究表述就 ,选出了较为适宜的数学模式 ,就污染物含量与污染源距离的关系进行了分

A system of long distance laser atmosphere communication on moving carrier,by which the low limit of communication distance is 20 kilometers in moderate atmosphere visibility,is designed.

设计了一种适用于运动载体的远距离激光大气通信系统,旨在满足在中等大气能见度下,通信距离不低于20 km。

This paper described and reviewed a method of long distance measurement for the colour of building and the corresponding apparatus.

本文分析和讨论了对建筑物颜色与亮度的远距离测量方法以及相应的仪器。

Combined with the construction of residential district in Beijing Fengtai District,this paper discusses the ultra-distance pumping out concrete which is made on the spot,and the problems which should be paid attention to in the process of pumping out construction as wall.

结合北京市丰台区的某大型住宅小区工程,探讨现场配制混凝土超远距离泵送砼的配制,以及泵送过程中施工应注意的问题。

Applying long-distance pumping concrete for sub-way project;

远距离泵送混凝土在地铁工程中的应用

Through the cement concrete pumping construction experience of Xinjiang Sai-Guo Mountain Freeway,the paper introduced the mix design and construction technology of high-lift,long-distance pumping cement concrete in detail,and put forward the quality control measures.

通过新疆赛果高速公路山岭重丘区泵送水泥砼的施工经验,介绍高扬程、远距离泵送水泥砼的配合比设计及施工技术,并提出施工过程中的质量控制措施。

This paper discusses long-distance communication with S7-200 PLC in network-connection.

本文首先简单介绍了S7-200 PLC组网时的远距离通讯问题及其解决方案。

Introduced circuit used IC and computer that can operate remote single phase diesel generating set.

介绍采用IC和单片机实现对单相柴油发电机组远距离控制。

The various materials as fuel are burnt in an experimental device of Room-Corridor structure, the mass loss rate of which, and the relationship of the mass loss rate with the smoke transportation velocity and CO concentration at a distant location are studied in detail in this paper.

通过不同燃料在模拟房间—走廊结构实验装置中的燃烧实验 ,较系统地揭示了不同材料燃烧时失重速率变化与远距离处烟气迁移速度和CO浓度的关系。