2) selective protection
选择性保护
1.
The total synthesis of natural Cudraflavanone B was first achieved through selective protection of phenolic hydroxyl groups, Mitsunobu reaction, Claisen rearrangement, condensation, cyclization and deprotection starting from 2,4,6-trihydroxyacetophenone and 2,4-dihydroxybenzaldehyde.
以2,4,6-三羟基苯乙酮和2,4-二羟基苯甲醛为起始原料,经过异戊烯基取代、选择性保护羟基、Mitsunobu反应、Claisen重排、醛酮缩合、催化环化及去保护基等步骤,首次完成了天然异戊烯基黄烷酮CudraflavanoneB的全合成,同时也完成了(±)-5-O-甲基-6-(2"-异戊烯基)-7,2',4'-三羟基黄烷酮的全合成研究。
2.
Three-section protection model was established to implement selective protection.
通过漏电电流计算模型得到最大漏电电流及所在相线,建立三级漏电保护模型,实现选择性保护,并设计了智能漏电保护器硬件结构,介绍了软件所实现的功能。
3.
This article discuss about the selective protection technique for the low-voltage distribution system: current election.
本文论述了低压配电系统的选择性保护技术:电流选择性、时间选择性、虚拟时间选择性、区域选择性和能量选择性,并简述了选择性保护技术对低压断路器的技术要求和选择性保护设计。
3) selective leakage protection
选择性漏电保护
1.
The selective leakage protection system for underground HV distribution networks based on harmonic detection;
基于谐波检测的井下高压电网选择性漏电保护系统
2.
In view of the problem with underground selective leakage protection,the paper focuses on the principle of zero-sequence power direction,and presents a scheme of phase comparison between zero sequence voltage and current based on DSP TMS320LF2407A,which can achieve the selectivity of leakage protection by zero-cross-over triggering circuit.
针对煤矿井下选择性漏电保护的问题,着重围绕零序功率方向性原理对该问题进行了研究,并结合DSP(Digital Signal Processor)技术给出了一种基于TMS320LF2407A芯片的零序电压、电流相位比较方案。
3.
The paper Presents the principle of selective leakage protection based on zero sequence current direction.
为保障煤矿生产的安全性,煤矿井下低压馈电开关中须装设选择性漏电保护装置。
4) selective earth leakage protection
选择性漏电保护
1.
A discussion is given concerning the matching scheme of the selective earth leakage protection system with the shunt of artificial ground.
对人为接地分流的选择性漏电保护系统的配合方案进行了分
5) selective deprotecting
选择性去保护
6) selective protection
保护的选择性
补充资料：脱屑性间质性肺炎
脱屑性间质性肺炎
desquamative interstitial pneumonia
较少见，1～2月龄时发病较多。病因不明。主要组织学特点：①肺上皮细胞大量增生并脱落到肺泡腔内；②肺泡内蓄积有巨噬细胞并有PAS染色阳性，抗淀粉酶的细胞浆颗粒游离于肺泡腔；③肺间质有淋巴细胞、单核细胞、浆细胞及嗜酸细胞浸润；④肺泡壁由于水肿充血及细胞浸润而显著增厚。临床症状表现为弥漫性肺纤维化的表现。胸片显示两下肺毛玻璃样，有边缘不清之模糊三角形阴影，从肺门沿心缘向肺底及周缘放散。治疗可用肾上腺皮质激素，使临床及X线改变好转，且停激素后可复出现。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条