In order to promote the frequency of rice transformation mediated by Agrobacterium , studies on ear and induction frequency of mature embryo s calli of japonica variety Taibei 309,and the effects on transformation frequency of calli by particle bombardment were made.
为了提高农杆菌转化水稻的频率 ,对粳稻品种台北 30 9的幼穗和成熟胚的愈伤组织诱导频率和粒子轰击时其愈伤组织转化频率的影响进行了研究 。
Some atoms decompose only after being bombarded with high energy particles.
有的原子受到高能粒子轰击之后才会裂变。
a radioactive transuranic element synthesized by bombarding einsteinium with alpha particles.
一种放射性超铀元素，用α粒子轰击锿而合成。
Nuclear reactions may be induced by bombardment with a wide variety of particles.
核反应可以通过各种各样粒子轰击来诱发。
a radioactive transuranic element; discovered by bombarding curium with alpha particles.
一种放射性超铀元素，在用α粒子轰击锔时发现。
In an experiment, a beam of known intensity impinges on a target.
在实验中，用已知强度的粒子来击轰靶。
The earth is continually bombarded by particles from outer space.
地球不断地受到来自外层空间的粒子的轰击。
fast atom bombardment ion source
快（速）原子轰击离子源
ion bombardment secondary electron image
离子轰击二次电子像
molecular-beam electron bombardment detector
分子束电子轰击探测器
Then they zap the results with a stream of particles from the laboratory's elderly proton synchrotron.
等一起就绪，他们便用实验室里的老式质子加速器产生某种粒子流，轰击云室中的大气层。
Investigation of Surface Nanocrystallization of a 316L Stainless Steel Induced by Supersonic Fine Particles Bombarding;
超音速微粒轰击316L不锈钢表面纳米化的研究
Flak hails on the plane.
高射炮火像雹子般轰击飞机。
The crystals were cleaned by argon ion bombardment.
结晶体由氩离子轰击而净化。
Surface effects of W18Cr4V high speed steel substrate irradiated by Nitrogen ion beams
氮离子束轰击W18Cr4V高速钢的表面效应
A Calculation to Atomic lonization Cross Section on K - Shell When Bombarding a Nuclear Target With Election;
电子轰击核靶原子K壳层电离截面的一种计算
Effect of N~+ Ion Beam Bombardment on the Properties of Arc-Ion-Plated TIN Films
氮离子束轰击对电弧离子镀TiN膜层的作用
Research on the Synthesis of Nanodiamond by Laser Irradiation on Graphite Particles Suspended in Water;
激光轰击水中悬浮石墨颗粒合成纳米金刚石的研究
Effect of Supersonic Fine Particle Bombarding Bonded Coating on Antioxidation Behavior of Thermal Barrier Coating
超音速微粒轰击粘结层对热障涂层抗氧化性能的影响