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| 61. | scavenging precipitation ion exchange process |
| 清除沉淀 离子交换法 |
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| 62. | precipitation hardening alloy |
| 沉淀硬化合金 |
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| 63. | precipitation-hardening steels |
| 沉淀硬化钢 |
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| 64. | precipitation hardening type magnet |
| 沉淀硬化型磁铁 |
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| 65. | condensation precipitation phenomenon |
| 凝结沉淀现象 |
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| 66. | lancefield precipitation test |
| 兰斯菲尔德沉淀试验 |
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| 67. | precipitation hardening treatment |
| 沉淀硬化处理 |
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| 68. | precipitation heat treatment |
| 沉淀硬化处理|人工时效 |
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| 69. | chemical precipitation ore deposit |
| 化学沉淀矿床 |
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| 70. | high speed coagulative precipitation unit |
| 速效凝结沉淀装置 |
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