卟啉的平均分子结构简式衡量其取代基的组成，尤其对地质体中相同碳数的卟啉“ 混合物” 大环外取代基的构成十分有效。
The average condensed formula of molecular structure is effective to derive the composition of the peripheral substituents of porphyrins, especially geoporphyrins with identical carbon numbers.
本文介绍我国一种新型单梁简支空中横移梁式铁路架桥机的总体结构设计及其结构荷载试验。
This paper describes general structure design and structure load test of girder type railway bridge erecting machine with single simple supported beam and overhead transversely travelling trolley.
本文讨论这种简式P CM遥控的工作原理和电路的逻辑结构。
In this paper, we discuss the operational principle of a simple type PCM telecontrol and the logic structure of the circuit.
预弯组合简支梁，是钢板与混凝土相结合的一种新型梁式结构，本文介绍该组合梁的基本构思及设计、施工等内容。
Prebent combined simple supported beam, combining steel plate with concrete, is a new type beam structure. This paper introduces the basic conception, design and construction of this combined beam.
列管式固定床反应器催化剂支托的结构形式，经历了由繁到简、由难到易的演变。
The structure forms of catalyst support for tubular fixed bed reactor underwent the evolution from complex to simple and from difficult to easy.
跨座式轻轨轨道采用简支梁结构，铸钢支座需承受所有荷载，其强度将对轻轨交通产生决定性的影响。
In design of light railcar used freely supported beam, the cast steel pedestals will bear complex loads, which include weight, acceleration and wind, etc.
跨座式轻轨轨道采用简支梁结构，铸钢支座需承受所有荷载，其强度将对轻轨交通产生决定性的影响。
In design of light railcar used freely supported beam, the cast steel pedestals will bear complex loads, which include weight, acceleration and wind, etc.
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