1) parasitic helix wire
寄生螺旋线
1.
A helical antenna with a variable pitch angle and a parasitic helix wire is designed to improve radiation performance of helical antennas.
为了改善轴向模螺旋天线的辐射特性,把变升角和加绕寄生螺旋线两种方法结合起来,设计了一种带有附加螺旋线的变升角螺旋天线。
2) Spiral weld pipe production line
螺旋焊管生产线
3) Parasitic nematodes
寄生线虫
1.
Studies on quarantine techniques for parasitic nematodes in export garden plants;
出口苗木寄生线虫检疫处理技术的研究
2.
Investigations on parasitic nematodes of import and export garden plants in Jiangsu Province;
江苏省进出口园林植物寄生线虫的调查研究
3.
Parasitic nematodes cause diseases of major socio-economic importance in animals and humans world-wide.
寄生线虫病严重危害人和动物的健康,但目前防治寄生线虫病尚存在困难。
4) Parasitic nematode
寄生线虫
1.
Identification of plant parasitic nematodes from rhizospheric soil of Erigeron breviscapus in Yunnan;
云南省灯盏花根际土壤寄生线虫的种类鉴定
2.
Eleven parasitic nematode species of flowers and plants in rosaceae were identifiied from Prunus mume,Rosa cvs,Pyracantha fortuneana Linn,Rosa rugosa,Kerria japonica,Chaenomeles speciosa,Malus Halliana,Jacobinia carnea.
从梅花、月季、火棘、玫瑰等8种隶属蔷薇科花卉上分离鉴定出11种花卉寄生线虫:厚尾矮化线虫(Tylenchorhunchus crassi-caudatus)、尤因矮化线虫(T。
3.
and the damaging characteristic of 10 main genus of parasitic nematodes such as Pylenchulus,Tylenchochnehus infecting different conifer were reported in this paper.
报道了黄山针叶树线虫种类及 Pylenchulus,Tylenchochnehus等 1 0个主要属的寄生线虫对不同针叶树的危害特点 ,并叙述了黄山线虫分布规
5) passive antenna,parasitic-element antenna
寄生天线
6) lead parasitic
引线寄生
补充资料：螺旋线
又称“柱面螺旋线”。一种空间曲线。其特征是曲线上每一点的切线与固定直线(轴)交定角。当动点在一圆柱面上以等角速度作转动，同时又以常速沿轴向作匀速直线运动时的轨迹。有右旋和左旋之分。
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