控制实验

In one type of laboratory test all the variables but one are controlled.

这种试验的方法被称为控制实验。

In this paper, a 2-year field manipulative experiment was conducted to study the effects of clipping (stubbled 1 cm, stubbled 3 cm, and unclipped), fertilizing, and watering on the compensatory growth of Elymus natans . The compensatory height, specific leaf area, net photosynthesis rate, and relative growth rate were measured, aimed to approach the compensatory mechanism of the species.

通过为期2年的野外控制实验，研究了刈割高度（留茬1 cm、3 cm及不刈割）、施肥和浇水处理对垂穗披碱草补偿生长的影响，并结合对各处理分株密度、比叶面积、净光合速率和相对生长率的变化研究，探讨了其补偿生长机制。

Functional Ecology , 8, 551– 562.Hertling UM, Lubke RA (2000) Assessing the potential for biological invasion — the case of Ammophila arenarian . South African Journal of Science , 96, 520– 527.Lambers H, Poorter H (1992) Inherent variation in growth rate between higher plants: a search for physiological causes and ecological consequences.

室内环境控制实验相对于野外自然环境而言，为植物的生长提供了更充足的水肥营养，已有研究报道较高的资源有效性会引起能量投资成本的降低(Martínez et al 。， 2002)，可以使植物将更多的能量用于加速生长和资源竞争。

Japanese eel, Anguilla japonica, is a catadromous fish, that spawned in the sea and migrating between sea- and freshwater. Otolith strontium / calcium ratio has been widely used for recording the migratory history of fish, but the interactive relationship between otolith Sr /Ca ratio and environment factors remained unclear.

鳗鱼为降海洄游型鱼类，一生当中会在淡水与海水之间洄游，近年来有相当多的研究利用其耳石锶钙比来回推鳗鱼洄游环境的历史，因此，本研究期由实验室的控制实验，验证盐度与饵料对鱼体组织锶钙比、耳石锶钙比及分配系数的影响。

Finally, the proposed method is applied to the on-line vibration control of a macroscopically smart mechanism.

宏观机敏机构的在线振动控制实验表明，柔性连杆的应变峰值降低了80％，机构的动力学性能得到了显著改善。

The result of this experiment can be tooken as important reference during exploiting the

利用超细水雾进行瓦斯爆炸控制实验的成功为进一步开发瓦斯爆炸水系抑制剂提供了重要的参考。

The design of remote control belt-driven experiment system is brought forward.

2.2带传动远程控制实验系统硬件设计。

The studies were performed in autoclaves at a constant argon pressure of 1MPa and a temperature of 440℃ using pyrolysis times of 5 and 10h.

该炭化过程在反应釜中进行，控制实验条件如下：氩气压强1MPa，温度440℃，热裂解时间5h～10h。

Quires:(1) the combination of laboratory microcosm study and field mesocosm experiments; and (2 ) the

野外控制实验；(2)结合物种多样性调查和不同功能群的功能分析。

One individual, for example, was arrested for joyriding, given a two-year sentence and held for mind control experiments.

例如，一个人，由于飙车被逮捕，被判刑2年，并被抓去进行精神控制实验，他被关押了18年。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。