double-line

The paper discussed the wiring pattern,protection and characteristics of electified section post with double line quadripole wiring.

述了双线电气化分区亭的接线方式、保护及其特点。

This paper reviewed the chromosomal engineering in the aspects of double diploid, hetero-additive line, hetero-replacement line, exchange line, monosome one incomplete chromosome systems.

对植物染色体工程与双二倍体、异附加、异代换、易位、单体与缺体统进行了综述。