未上漆的

6 As for all machined surfaces without protective paint, metal protector or grease should be applied to avoid serious rustiness.

6对于所有机械加工的未涂防护漆的表面，应涂上金属防护剂或油脂，以防严重生锈。

Eg. The unpainted metal tools were covered with rust .

未上漆的金属工具上布满了锈。

The unpainted metal tools were covered with rust.

未上漆的金属工具布满了锈。

The first thing I saw was an unpainted table lit by candlelight and piled with books , documents and papers ,and the dim outline in blue-gray cotton unifom who had arisen as we entered .

我第一眼看到的是一张堆满书籍。文件。靠烛光照明的未上漆的木桌，我们进屋后看到的是一位穿着蓝灰色棉布军服的模糊不清的轮廓。

Thus, when the external support plate is anchored to a structural member over the valve, undue weight on the plastic piping and/or corrosion freeze-up of valve operation is avoided. The 1/4" thick 4" x 12 external support plate, as well as other associated hardware, is carbon steel, painted gray, or unpainted 304 SS, depending on the extension rod selected.

因此，当外部支撑板成为阀门上的结构部件的一员时，就可以避免不适当的重量施加在塑料管道上和/或阀门运转的腐蚀性冻结现象的发生。1/4英寸厚4英寸宽12英寸长外部支撑板，以及其它扶助的五金件，或是碳钢，外喷灰色漆，或者是未上漆的304不锈钢，主要取决于所选择的加长杆。

Applying a wax, whether it's synthetic, natural or a blend of both, to a neglected surface that has not been properly cleaned and then polished, will merely act to seal or lock the contaminants to the finish, and will do nothing to improve, or remove the other defects and in most cases will only marginally improve gloss, shine and reflectivity.

将合成蜡或天然蜡或天然合成蜡上於未被清洁的肮脏表面时，只会把脏污密封或锁在烤漆表面，这将没办法改善或移除其他的缺损，在大部分的情况下，它只会稍稍地增进色泽、光泽和反射能力

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。