About which designs for the force thick plate levels off the back pressure hoop group specially, May achieve the guarantee the stress relieving effect.

特别为强力厚板而设计的上下整平背压滚轮组，可达到保证的应力消除效果。

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The effect of back pressure on the weight precision in injection molding was investigated via experiments of injecting to air.

通过对空注射方式对影响精密制品质量重复精度之一的背压进行实验和理论研究。

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Such as operation program, selection of earth pressure, wall-back grouting, rectification of shield machine, which are used to reduce the effect of construction on environment, are analyzed in detail.

详细分析了掘进模式、土压力选择、壁后注浆、盾构纠偏等施工控制手段，用来减小盾构施工对周边环境的影响。

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This is when the sudden pressure of demand on supply cannot be met, and demand must, in effect, be cut back by higher prices.

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