Low primary syndrome 低原综合征
low voltage primary wiring 低压主接线
low years of primary school 小学低年段
Low-middle in primary school 小学中低年段
low-grade primary copper sulfide 低品位原生硫化铜
low-grade primary copper sulfide ore 低品位原生硫化铜矿
The high-power heavy truck has replaced the primary low–power truck.
曾经的小马拉大车如今已被大功率高效率的重型卡车所替代；
The line noise is a primary low frequency component of self-noise in submarines.
线谱噪声主要集中在自噪声的低频段。
The resources of natural rutile in our country is primary low-grade ore, eclogite-type rutile deposit is characterized as large, thick ore body, easy to exploration and mining.
我国天然金红石资源绝大部分为低品位的原生矿石，榴辉岩型金红石床具有规模大，矿体厚，易于勘探和开采等特点。
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