This insect enemy was studied in 1979 ~ 1987 to find the ways of its intergrated control.
为了探讨除蚧灭病的综合防治途径，我们于1979 ~ 1987年进行了专题研究。
Narrow gap welding is a new welding technology, in which unusual welding technique and narrow gap are intergrated with the special equipment and control technology.
窄间隙焊接是把常规的焊接工艺与窄间隙坡口结合在一起，通过专门的装置和控制技术而集成的一种新型焊接技术。
The nematodes that limit sweetpotato production are sweetpotato root-knot and rot-knot nematode. The intergrated methods are used to control the disease in sweetpotato production.
甘薯生产上主要采用综合防治方法进行防治，其中选育抗病品种最为经济有效。
The nematodes that limit sweetpotato production are sweetpotato root-knot and rot-knot nematode. The intergrated methods are used to control the disease in sweetpotato production.
甘薯生产上主要采用综合防治方法进行防治，其中选育抗病品种最为经济有效。
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