| 1. | The grime is too ancient .
积垢年深月久。 |
| 2. | We removed the accumulated filth of years from it with a cloth-brush .
我们用抹布擦去了它上面的积垢。 |
| 3. | Poultry house cleaning equipment and vehicles usually have accumulations of litter and feces .
鸡舍的清洁设备和运输工具通常都会有垫料和粪便的积垢。 |
| 4. | This cup is stained on the inside
这杯子的内侧有积垢 |
| 5. | A strainer should be installed as shown , ahead of backflow preventer to prevent disc from unnecessary fouling
应该如图所示安装过滤器，使其位于防回流阀之前，防止阀瓣产生不必要的积垢。 |
| 6. | A strainer should be installed as shown , ahead of backflow preventer to prevent disc from unnecessary fouling
应该如图所示安装一个过滤器，位于防回流阀之前，用于防止阀瓣产生不必要的积垢。 |
| 7. | A strainer should be installed as shown , ahead of backflow preventer to prevent disc from unnecessary fouling
应该如图所示安装一个过滤器，位于防回流阀前面以防止阀瓣不会产生不必要的积垢。 |
| 8. | Lead should not normally enter the flow , because layers of different lead - snaring minerals naturally build up inside the pipes
正常情况下，自来水里不应该含有铅，因为水管内部一般都会自然形成好几层不同的矿物质积垢，可以把铅抓住。 |
| 9. | But these mineral scales act as a trap for lead only as long as they remain insoluble ; a sudden shift in water chemistry can change that
但这些矿物质积垢只有在本身不溶解的状态下，才具有抓住铅的能力；水中化学性质的突然变化，就可能改变这一点。 |
| 10. | The products inside sleek , not sense , the transmission fluid resistance small , can increase the flow and excellent chemical stability , health , drug - free
该产品内壁光滑，不积垢，输送流体阻力小，可以增加流量，同时具有优良的化学稳定性，卫生、无毒。 |
