If an arm is stretched forward under water resistance is increased and a reaction force back ward is developed both of which would contribute to negative acceleration.
如果手臂在水中是向前伸展则阻力会随之增加而向后方的反作用力也会出现，二者都会产生负加速度。
New JS dispersion resistance agent for under water concrete is developed as per the requirement of concrete construction under water.
根据水下混凝土施工的需求研制出一种新型JS水下混凝土抗分散剂。
The hydraulic resistance of shallow water flow under the influence of rainfall has been investigated through the flume experiment with artificial rainfall.
通过实验室人工降雨水槽试验，研究了降雨影响下浅层水流的阻力规律。
Through theoretic analysis and flume experiments, the characteristic of water resistance through permeable frame groups under lower submerged flow is researched.
通过理论分析、水槽试验研究了低淹没流动下穿越框架群水流的阻力特性，为四面六边透水框架群护岸技术的推广应用提供依据。
A composite film with water-resistance was prepared by curing polyurethane-acrylate on regenerated cellulose film (from bagasse pulp) under UV-irradiation.
再生纤维素膜(甘蔗渣浆制)表面直接用紫外光固化聚氨酯-丙烯酸酯制备出防水性复合膜。
The relationship between fertilizing and yield, growth, water use efficiency and drought-resistance of wheat were studied under field and pot conditions.
在田间及盆栽试验条件下，以小麦为主要实验材料，研究了干旱下无机营养与作物产量、生长、水分利用效率及抗旱性的关系。
Theoretical model was described considering both flow-resistance and water column of filter and container, and analytical solution was gained under linear flow-resistance.
建立了同时考虑针的流阻和滤头及容器内水柱影响的渗流分析模型，并得到线性流阻下地基渗透系数与容器内压力的解析关系。
The optimum processing has been investigated and under the optimum processing the fabric's water repellency, oil repellency and stain resistance were improved.
得到了提高羽绒服涤纶面料的拒水、拒油、防污的三防整理优化工艺条件。
The thermal shock resistance of plasma-sprayed ZrO2 thermal barrier coatings under the conditions of water quenching and flame jet was studied.
研究了涂层在水淬和火焰喷烧两种条件下的抗热震性能。
Water resistance, repeated washing without afraid of light and color change under high temperature.
抗水性，反复洗刷，不怕光及高温色变。
Drought resistance and photosynthesis of two species of Ceratoides under the condition of artificial soil desiccation were studied based on some indexes of water and photosynthesis.
用盆栽控水的方法模拟土壤干旱条件，从水分生理和光合作用方面对两种驼绒藜属植物的抗旱生理进行研究。
This paper is the report of the behaviour of free-proline accumulation in various drought-resistance types of soybean cultivars under water-stress and non-stress condition in various growing periods.
本文报道了不同抗旱类型大豆品种游离脯氨酸在水分亏缺和无亏缺条件下的不同生育期累积动态变化。
This paper is the report of the behaviour of free-proline accumulation in various drought-resistance types of soybean cultivars under water-stress and non-stress condition in various growing periods.
本文报道了不同抗旱类型大豆品种游离脯氨酸在水分亏缺和无亏缺条件下的不同生育期累积动态变化。
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