The composite role of the fibers and rubber powder makes the decline trend of strength of mortar slow.

纤维和胶粉的复合作用使砂浆的强度下降趋势减慢。

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From the demand Angle, the increasing of economy has a low effect to employment, and the flexibility of increasing employment always keeps a decline trend in the few years.

从需求方面来看，经济增长对就业的拉动作用逐渐减弱，近几年就业增长弹性一直处于下降趋势。

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The decline trend is old news, and those declines have probably reached their peak.

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The main conclusion from this demographic work is that, barring a new increase in female labor force participation or a significant increase in the growth rate of the population, these demographic factors point towards a further decline in trend growth of employment and hours in the coming decades.

FORBES: Does An Aging Population Hurt The Economy?

Still, overall, labor membership is on a decline, a trend that has continued through the decade that AFL-CIO President John Sweeney has headed the federation.

NPR: Labor Rift Could Alter Political Strategies