生物量

Strains E3 and F2 could degrade about 90% of 1,2,4-TCB and mineralize 58% and 46% of 1,2,4-TCB to CO_2 within 30 days in mineral liquid cultures,respectively. Biomass was formed during the mineralization process.

E3和F2能在含1，2，4-TCB的无机盐培养基中彻底降解1，2，4-TCB生成CO2，30 d降解率达到90%以上，其中58%和46%矿化为CO2，同时形成一定量的微生物生物量。

BMac was found to be the important factor regulating the yield of Chinese mitten crab.

4确定沉水植物生物量是河蟹产量的关键调控因子。

Most species belong to Indian-West Pacific tropical fauna. The dominant groups are Mollusca and Annelida. The average biomass, density and diversity of macrobenthos were 1043.37 g/m^2, 692.37 Ind/m^2 and 5.5228 respectively.

优势类群是软体动物和节肢动物，底栖生物的平均生物量、栖息密度和多样性指数分别是1043.37 g/平方公尺、692.37个/平方公尺和5.5228。

The results showed that the biomass of every station was distributed inhomogeneously, the polychaeta on biomass was increased remarkably, and the inhabiting density of polychaeta and molluscan were absolutely advantage species.

结果表明，各站位生物量分布不均匀，生物种类上多毛类显著增多，多毛类和软体动物的栖息密度为绝对的优势种类。

At radio-frequencies the dielectric permittivity of cell suspensions are monotonic function of the measuring frequency and cell density.

微生物的存在会改变发酵液的电特性，发酵液在无线电频率范围内的电容率增量是测量频率和生物量浓度的函数。

Mud flat of mangrove, benthic macrofauna, biomass, species diversity

中文关键字：红树林滩涂，大型底栖动物，生物量，多样性

Nutrient-enriched reservoirs support greater abundance and biomass of copepods. However, dominance of Calanoids was lower while dominance of cyclopoids, copepodids and nauplius were much higher in the nutrient-enriched reservoirs.

随着水库营养水平的升高，桡足类密度和生物量也相应增加，但是大型哲水蚤的优势度降低，而剑水蚤和桡足类幼体的优势度上升。

The effects of immobilized microbes including Rhodospirillaceae, Bacillus, Nitrobacteria and denitrifying bacteria on the changes in species, quantity and biomass of algae and zooplankton in aquiculture water and on the physicochemical environmental factors, such as nitrogen, were studied.

研究了固定化微生物(含有光合细菌、芽胞杆菌、硝化细菌以及反硝化细菌)对养殖水体中藻类和浮游动物的种类、数量、生物量以及水体氮素等理化环境的影响。

We are investigating various types of nonfood biomass and are uating mechanisms for acquiring it in sufficiently large quantities.

在充分掌握大量的基础上，我们正在研究不同类型的非食品的生物量和评估机制。

The reasonable thinning is very significant in theory and practice to improve the nutation space of canopy and conditions of water and nutrition underground, to guarantee individual and colony development and to improve forest community biomass and productivity.

合理的抚育间伐对改善森林林冠层的营养空间以及地下水肥的供应条件，保证林木个体和群体生长，充分发挥森林群落的生物量和生产力具有重要的理论和实践意义。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。