This technology provided effective ways for solving the three baffling problems, I, e, slow propagation, lower quality and serious virus diseases found in the jujube production.
该项技术对于长期以来红枣生产中遇到的繁殖慢、品质差、枣疯病日趋严重三大难题提供了有效的解决途径。
2
The propagation problem of T. E. wave in unmagnetized inhomogeneous plasma-filled cylindrical wave guide is investigated.
本文研究了无外加磁场时非均匀等离子体圆柱波导中横电波的传播问题。
3
The stable expression of exogenous gene in E. coli chromosome had no effect on the bacterial growth and propagation.