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- types of low yield timber forest 低产用材林类型
- The SPB, SS, SSB, PBD showed high effect of genotype and low effect of seeding date whereas DPB displayed high effect of seeding date. 2)现存一次枝梗数、现存二次枝梗数、现存颖花数、一次枝梗分化数4个指标的基因型值较大，播期效应值较小；一次枝梗退化数播期效应值较大。
- Timber forest. 用材林
- If macropore path once came into being,the water which was pumped into reservoir would be circling in low effect or even no effect. 注采过程中一旦形成大孔道,就会造成注入水长期无效或低效循环,不仅影响了油田可采油的动用程度,而且增加了开发成本。因此,必须加强对大孔道的识别及调剖。
- For the first time, the Specialist-aided system was constructed by Delphi and the ADO database access technology in the foundation of the timber forest subcompartment evaluation and rate average evaluation. 该专家辅助系统在用材林小班评估及总体评估基础上首次采用时新先进的Delphi语言及ADO数据库访问技术构建专家辅助系统。
- Configuration of the machines for the lower effect more visible. 对于配置较低的机器效果更为明显。
- Abstract： Artificial timber forest dominated by pine and fir can cause loss of water and soil, decrease of forestland productivity and protection function , and easy occurrence of pests and diseases. 摘 要： 营造松、杉为主的人工用材林，引起水土流失，林地生产力降低，防护功能差，易发生病虫害，且投资大。
- Breakingfruit Chinkapin,a dominant indigenous tree species in of China, Good in fast-growing,vast adaptability and short strike time,it also can be big area planted as firewood and timber forest. 黎蒴栲是中国南方的一种乡土树种，速生性强，适应性广，轮伐期短，大面积种植可以为薪炭林和用材林。
- The technology of frequency conversion for settlement of effervescence,overflow and low effect of dehydration about vacuum oil-filter was reported in the paper. 介绍了利用变频技术解决真空滤油机存在的冒泡,溢出以及脱水效果差问题。
- In the 1960s, China began plantation of timber forests, construct of forest shelterbelt and construct nature reserve, and set up state forest farms. 从上个世纪六十年代开始营造用材林和防护林，建设自然保护区和国营林场；
- The low building price is advantageous to a rich man surfeit to occupy housing first, sparse lack the low price of resources to result in the waste use with low effect more easily. 低房价首先有利于富人过量占有住房，稀缺资源的低价更容易造成浪费和低效使用。
- Reform of the System of the Price of Timber Forest 用材林林价体制改革探索
- Anti-coagulants are perhaps the most suitable despite their low effectiveness outdoors. 有抗凝性的药剂大概是最适合的，尽管在野外使用时效率较低。
- fast - growing and high - yielding timber forest 速生丰产用材林
- fast-growing and high-yield timber forest 速生丰产用材林
- Methomyl (24%)and isoprocarb (20%EC) were moderately effective,while dimethoate (40%EC) resulted in low effectiveness. 灭多威、异丙威对节瓜蓟马防治效果一般，而乐果防治效果最差。
- Half-duplex Ethernet has lower effective throughput. 半双工以太网是一种低效的传播方式。
- non - timber forest products (NTFPs) 林副产品
- Refractory glaucoma has complicated reasons and low effective rate after normal filtrating surgery. 难治性青光眼病因复杂,常规滤过性手术成功率低。
- NTFP ( non- timber forest product) 林下资源
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
