查询词典 chalk dust

Frame as for watercolours with spacers under the mat to prevent chalk dust from ...

框架至于水彩画与间隔下的垫子，以防止粉笔灰尘从。。。

This paper is placed on the piece of wood then covered with chalk dust.

把这张纸覆盖在一块木头上，把白灰撒上去。

For instance, one recent report says that pirates in countries such as China and India have used chalk, dust and contaminated water to make counterfeit drugs.

比如说，最近的一份报告就显示，在中国和印度等国家的假冒伪劣商家曾经以白垩、灰尘和污染水为原料来制造假药。

Yes, the classroom is always a comfortable working condition except some chalk dust still.

是的，课室虽然还有粉笔尘，但仍然是很舒适的工作环境。

Matching has Products chalk dust, chalk and eraser folder.

配套产品有微尘粉笔、粉笔夹及板擦。

I am also a teacher, I think that inhaling chalk to reduce the school at the end, it is necessary to use good quality chalk, chalk dust, like dust or less, and second, to take chalk and write when you should pay attention to the posture of as far as possible not to chalk break.

答：我也是一名教师，我认为吸入粉笔，以减少在最后学校，必须使用优质粉笔，粉笔灰尘像灰尘或更少，二，采取粉笔写时要注意尽量不粉笔打破态势。

Usually, a carver draws out the patterns and forms on paper. Then the artist cuts holes along the outlines of the design. This paper is placed on the piece of wood then covered with chalk dust.

通常，木雕师先在纸上画出图案和形状，再由工匠剪出设计图案，之后将剪纸放在待加工的木料上，用白色粉笔描线。

The white chalk dust goes through the holes in the paper and marks the wood so the carver has a visual guide to begin cutting.

用白色粉笔沿着纸洞描线，在木料上作出记号，这样，木雕师就有了参考样本，开始雕刻。

The white chalk dust goes through the holes in the paper and marks the wood, so the carver has a visual guide to begin cutting.

白灰通过纸上的孔洞在木头下留下标记。这样雕刻师就可以看着指示开始切削。

The content of courses produces a great adjustment, and the teaching way becomes the multimedia teaching from the chalk dust all over the sky. Also, students' study enters into the diverse and interactive study from "just copying and reciting without thinking."

教学内容也产生大幅度的调整，教学方式从粉笔灰漫天飞舞演变为声光十色的多媒体教学，学生的学习也从「讲光抄」、「背多分」进入多元、互动的学习。

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。