1)  lightening agent
减轻剂
1.
Fly-ash floating beads(FAFB) are created in coalburning power stations and,when used in downhole working fluids such as well cementing slurries as lightening agent,bear in some cases a high hydrostatic pressure(HSP).
漂珠为燃煤电厂的副产物,作为减轻剂用于入井作业流体如固井水泥浆时,要受三维静水压力的作用。
2)  antidote
药害减轻剂
3)  lightening admixture for cement
水泥减轻剂
4)  Lightening Material for Cement Slurries
水泥浆减轻剂
5)  Lighten
减轻
1.
To lighten the students learning overburden virtually is one of the key to deepen the basic education innovation and improve the teaching quality.
切实减轻中小学生过重课业负担也是深化当前基础教育改革、提高教育质量的一个关键。
6)  reduce
减轻
1.
Rational acidizing scale and quickly flowing in reverse is advantageous to reduce the formation damage, meanwhile selecting appropriately surface active agent can prevent and reduce the formation damage by well boring filter liquor, acidizing liquid and surface active agent.
合理的酸化规模和快速排液有利于减轻对地层的伤害,同时也应注重选择使用合适的表面活性剂,以预防和减轻钻井滤液及酸化施工入井液或是表面活性剂本身可能对地层的伤害。
2.
It also states that we should reduce forestry taxation expenses to promote the healthy development of forest.
针对我国现行林业税费存在的问题,如:林业税费种类繁多、比重大、政策执行不规范、不完善等,提出了相应的对策和建议,阐明应减轻林业税费,以促进林业健康发展。
参考词条
补充资料：水泥减轻剂
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CAS号：

性质：掺入油井水泥中降低相对密度的物质。有两大类：(1)能与石灰化合并同时具有强烈吸水和保水性能的轻质矿物材料，如膨润土、硅藻土、珍珠岩、粉煤灰等。(2)本身很轻且不影响水泥凝结硬化的填充性材料，如硬沥青、石油焦、无烟煤等。用于配制低比重油井水泥。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。