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1·Phone conservations are over in 30 seconds flat.

讲电话永远不会超过30秒。

2·Conservations of mass, momentum, and energy are used to determine liquid film thickness and temperature.

液膜厚度、速度与温度等参数通过求解液膜的质量守恒、动量守恒、能量守恒方程获得。

3·Phase 2 is designed to measure the effect of these conservations measures on the overall employee carbon footprint.

第二阶段的目的是度量这些能源节约措施对总体雇员碳轨迹的影响。

4·Based on the mass and momentum conservations of fluid, the mathematical model of Two-Piece plunger lift and single-string pig lift which unload by pressing fluid level down is derived.

基于流体质量、动量守恒导出了单管球塞气举和分体式柱塞气举采用“压低液面”卸载的数学模型；

5·The equations of mass conservations of the reactions arc described by a nonlinear parabolic system of equations. The objective function is the input quantity of gas in a fixed period of time.

反应的质量守恒方程为非线性抛物方程组，目标函数为一定时间内输入的气体量。

6·The thin film is divided three regions:The governing equations of mass, energy and momentum conservations were established based on the simplification and reasonable assumptions on the PHP system.

将液膜轮廓分为平衡液膜区、过渡液膜区和宏观液膜区并在合理的简化和假设的基础上建立了汽-液塞的质量、动量、能量方程。

(1)energy conservation能量守恒；能源节约

(1)water conservation节约用水，水源保护；水利

(1)soil conservation土壤保持

(1)water and soil conservation水土保持

(1)resource conservation资源保护；资源保育

(1)conservation of energy[物]能量守恒（定律）