Extinguishing concentration measurement experiments in the cup burner on two kinds of superfine ammonium phosphate extinguishing agents with different particle sizes had been done by means of filtering and weighing method combined with laser attenuation measurement.
采用过滤称重法配合激光消光法对两种粒度的磷酸铵盐微粒灭火剂在杯式燃烧器中的灭火浓度进行了研究,得出了激光测定磷酸铵盐微粒灭火剂的质量浓度标定曲线和微粒灭火剂的灭火浓度。
A preconceived preference or idea.
成见预先的爱好或主意
previously arranged or agreed on.
预先安排好或预先达成协议的。
anticipation: The act of anticipating.
预期,预料:预先采取的行为
To record(a television program, for example) at an earlier time for later presentation or use.
将…预先录入，预先录制为后期的表演或使用而预先录制（如电视节目）
ready cooked, mixed, etc
预先做熟的、 混合好的等.
To have an anticipatory taste of.
先尝预尝到…的滋味
contractual prices established in advance
预先确定的合同价格
A fixed election.
预先安排好结果的选举
predefined data type
预先定义的数据类型
planned suspension of water supply
预先安排的暂停供水
ready mixed joint compound
预先拌好的勾缝混合料
ready-printed journal form
预先印好的日记帐格式
ready-printed account form
预先印好的帐户格式
precomputed altitude curves
预先计算的高度曲线
preset digit layout
预先给定的数位格式
advance drawing change notice
图纸更改的预先通知
She made an advance payment for her new car.
她事先预付了她的新车。
preconnect handline
预先连接的小口径水带