您要查找的是不是：
- perforated grain powder 空心条药
- Speciality: This is a white grain powder; no odour and almost no taste. 白色颗粒粉末;无臭、几乎无味。
- It is widely used in industries and constructions to sieve grain powder ,filter liquid and gas ,for other purposes like safe guards on machinery enclosures ,Beside,it is widely applied for the substitute of wood strips in making wall and celling . 广泛用于工业及建筑业，筛选沙砾、过滤液体及气体、机械附件的安全防护等，而且它还可用来代替木条制作墙壁及天花板。
- MEASUREMENT ON SAND CONTENT IN GRAIN POWDER 粮食粉类含砂量测定方法研究
- The grain crop has gone down this year. 今年的粮食作物产量下降了。
- Most synthetic detergents are in the form of powder or liquid. 大多数合成洗涤剂呈粉状或液态。
- Sheets of postage stamps are perforated. 一张张的邮票都打过接缝孔。
- The target was perforated by bullets. 靶子上全是子弹打穿的孔。
- The company is an international trader in grain. 这家公司是国际粮食贸易公司。
- Actually they even have vanilla powder. 实际上还可以加香草粉。
- Having no opening; not perforated. 不开口的，不穿孔的
- The natives pounded the grain into a fine powder . 当地人把谷类碾成细粉。
- He takes a powder every morning. 他每天早晨吃一种粉状药。
- Their speculative buying of grain is illegal. 他们投机购买谷物是不合法的。
- Bad luck goes against the grain. 厄运总是令人讨厌的。
- Stores of grain are frequently attacked by pests. 储存的谷物经常受到害虫的破坏。
- Our grain output will be3.7 times that of1960. 我们的粮食产量将是1960年的3。7倍。
- Borax is a kind of white powder. 硼砂是一种白色粉末。
- Shaking will settle the chalk powder down. 晃一晃把粉笔末抖落下来。
- A corrugated or perforated conducting plate in a storage battery. 极板网栅，蓄电池电极板蓄电池中呈波纹状或有孔的导电板
