To experimentally investigate it, needle valves and transparent glass tubes with flow channels similar to that of safety valves were used instead of the safety valve.
采用针阀代替安全阀，实验研究了安全阀进口干度、阀开度对安全阀及下游管路中流动堵塞的影响。
Flat glass and precise graduation scale give more needle accuracy and high visibility.
平板玻璃和精确毕业规模给予更多针准确性和较高的知名度。
The present paper has described the die made by chromium car - bide for forming mass spectrometer needle and double curved surface glass tube in surface analyzing instrument.
介绍了采用碳化铬硬质合金制作质谱计和表面分析仪器中的双曲面玻璃管的成形模具。
From SEM chart, internal evenly with samples of quartz, needle bar granular calcium feldspar a1nd large glass phase.
从SEM图上可以看出，样品内部均匀地分布着粒状的石英、针棒状的钙长石和大量玻璃相。
Industrial cloth: 208,729,747, fiberglass cloth, glass fiber needle, barbed felting, film and liquid filtration cloth bag and so on.
工业布：208、729、747、玻璃纤维布、玻璃纤维针、刺毡、覆膜滤袋及液体过滤布等。
The rolling contact fatigue performance of ceramic balls with fine compact equal-axis grain and fewer glass phase exceeds that of those with slightness-needle grain and more glass phase.
细小致密的等轴状晶粒、玻璃相少的陶瓷球的滚动接触疲劳性能优于长针状晶粒、玻璃相多的陶瓷球。
Other problems arisen in knitting glass filament on Raschel latch-needle warp knitting machine.
玻纤复丝在舌针经编机上加工时的其它一些问题。
Main weak places where breaks are likely to occur when in knitting glass filament on Raschel latch-needle warp knitting machine.
玻纤复丝在舌针经编机上编织时，发生断裂的主要危险点。
The core material (110) can be formed at low cost in following mode: penetrating glass wool provided with the glass fiber by using a needle to tangle and gather the glass fiber.
以以下方式可以以低成本形成芯材料（110）：通过使用针穿透具有玻璃纤维的玻璃绒而缠结和聚集玻璃纤维。
The core material (110) can be formed at low cost in following mode: penetrating glass wool provided with the glass fiber by using a needle to tangle and gather the glass fiber.
以以下方式可以以低成本形成芯材料（110）：通过使用针穿透具有玻璃纤维的玻璃绒而缠结和聚集玻璃纤维。
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