Asian carp—including thecommon, black and bighead variety—were brought to the U.S. in the 1970sas live vacuum cleaners meant to remove algae and suspended matter fromponds.
上世纪七十年代，作为清除池塘中藻类和漂浮物质的活真空清洁器，亚洲鲤鱼——包括普通、黑色和大头品种——被引入美国。
Vacuum freeze - drying technique for black currant as raw material was investigated.
以黑加仑为原料，对其真空冷冻干燥特性和工艺进行了试验研究。
Vacuum freeze-drying technique for black currant as raw material was investigated.
以黑加仑为原料，对其真空冷冻干燥特性和工艺进行了试验研究。
The measurement of the total emissivity of a solid surface in the black cavity which is immersed in liquid nitrogen and under high vacuum (10-6 torr) by steady caloric method is described.
本文提出了一个真空度为10~（-6）毫米汞柱，黑体腔四周浸泡在液氮中的固体的表面热辐射率的测定方法。
This paper discusses the relation between degree of vacuum and air flow in drop pipe when black liquor flow is constant.
本文叙述了当液体流量恒定时，水腿中（大气压管）吸入空气量与真空度的关系。
107 room temperature vulcanized silicone rubber and calcium carbonate, white carbon black, additives such as mixing, vacuum glass glue.
可将107室温硫化硅橡胶和碳酸钙、白炭黑、助剂等混合均匀，抽真空制成玻璃胶。
Vacuum process Iron plate Frame, Bass section terminated by agraffe, Slow closing damping system Fallboard. Ebony Black Keyboard, German Roslau string, German FFW top hammer.
真空处理的钢板、低音区由搭扣终止、键盘盖带缓降系统。
Vacuum process Iron plate Frame, Bass section terminated by agraffe, Slow closing damping system Fallboard. Ebony Black Keyboard, German Roslau string, German FFW top hammer.
真空处理的钢板、低音区由搭扣终止、键盘盖带缓降系统。
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